Brazil is 3.4 times larger than Western Australia (Australia).
Area: 8,514,877 km2 World Factbook
Population: 202,656,788 (July 2014) World Factbook
Brazil, officially the Federative Republic of Brazil, is the largest country in both South America and the Latin American region. It is the world's fifth largest country, both by geographical area and by population. Wikipedia
Western Australia is a state occupying the entire western third of Australia. It is bounded by the Indian Ocean to the north and west, the Great Australian Bight and Southern Ocean to the south, the Northern Territory to the north-east and South Australia to the south-east. Wikipedia