Finding the Fourth Proportional to 391,139.73, 539,754.17 and 240,207.57
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Solution
The fourth proportional to 391,139.73, 539,754.17 and 240,207.57 is: 331,474.99
Step by Step Solution
- Step 1: Write the proportion equation
391,139.73 : 539,754.17 = 240,207.57 : x - Step 2: Convert to fraction form
391,139.73/539,754.17 = 240,207.57/x - Step 3: Cross multiply
391,139.73x = 539,754.17 × 240,207.57 - Step 4: Simplify right side
391,139.73x = 129,653,036,372.03 - Step 5: Solve for x
x = 129,653,036,372.03/391,139.73 - Step 6: Final answer
x = 331,474.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.