Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_45143 ( "Episode number Production number" text, "Title" text, "Sydney" real, "Melbourne" real, "Brisbane" real, "Adelaide" real, "Perth" real, "TOTAL" real, "WEEKLY RANK" real, "NIGHTLY RANK" real )

### Question ###
What is the lowest value for Perth, when Melbourne is greater than 461,000, and when Sydney is less than 430,000?

### Accurate SQL ###

SELECT MIN("Perth") FROM table_45143 WHERE "Melbourne" > '461,000' AND "Sydney" < '430,000'