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Finding the Fourth Proportional to 391,159.98, 539,782.11 and 240,227.82

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Solution

The fourth proportional to 391,159.98, 539,782.11 and 240,227.82 is: 331,502.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,159.98 : 539,782.11 = 240,227.82 : x
  2. Step 2: Convert to fraction form
    391,159.98/539,782.11 = 240,227.82/x
  3. Step 3: Cross multiply
    391,159.98x = 539,782.11 × 240,227.82
  4. Step 4: Simplify right side
    391,159.98x = 129,670,679,560.30
  5. Step 5: Solve for x
    x = 129,670,679,560.30/391,159.98
  6. Step 6: Final answer
    x = 331,502.93

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1.5x scale

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.