CREATE TABLE table_45143 ("Episode number Production number" TEXT, "Title" TEXT, "Sydney" FLOAT, "Melbourne" FLOAT, "Brisbane" FLOAT, "Adelaide" FLOAT, "Perth" FLOAT, "TOTAL" FLOAT, "WEEKLY RANK" FLOAT, "NIGHTLY RANK" FLOAT)

What is the lowest value for Perth, when Melbourne is greater than 461,000, and when Sydney is less than 430,000?
SELECT MIN("Perth") FROM table_45143 WHERE "Melbourne" > '461,000' AND "Sydney" < '430,000'
SELECT MIN("Perth") FROM "table_45143" WHERE "Melbourne" > '461,000' AND "Sydney" < '430,000'