Finding the Fourth Proportional to 378,529,205.80, 567,793,808.70 and 206,342,321.80
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Solution
The fourth proportional to 378,529,205.80, 567,793,808.70 and 206,342,321.80 is: 309,513,482.70
Step by Step Solution
- Step 1: Write the proportion equation
378,529,205.80 : 567,793,808.70 = 206,342,321.80 : x - Step 2: Convert to fraction form
378,529,205.80/567,793,808.70 = 206,342,321.80/x - Step 3: Cross multiply
378,529,205.80x = 567,793,808.70 × 206,342,321.80 - Step 4: Simplify right side
378,529,205.80x = 117,159,892,790,823,056 - Step 5: Solve for x
x = 117,159,892,790,823,056/378,529,205.80 - Step 6: Final answer
x = 309,513,482.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.