Finding the Fourth Proportional to 429,057.11, 643,689.70 and 129,519.79
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Solution
The fourth proportional to 429,057.11, 643,689.70 and 129,519.79 is: 194,311.08
Step by Step Solution
- Step 1: Write the proportion equation
429,057.11 : 643,689.70 = 129,519.79 : x - Step 2: Convert to fraction form
429,057.11/643,689.70 = 129,519.79/x - Step 3: Cross multiply
429,057.11x = 643,689.70 × 129,519.79 - Step 4: Simplify right side
429,057.11x = 83,370,552,836.14 - Step 5: Solve for x
x = 83,370,552,836.14/429,057.11 - Step 6: Final answer
x = 194,311.08
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.