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Finding the Fourth Proportional to 392,495.61, 588,387.93 and 272,609.17

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Solution

The fourth proportional to 392,495.61, 588,387.93 and 272,609.17 is: 408,666.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,495.61 : 588,387.93 = 272,609.17 : x
  2. Step 2: Convert to fraction form
    392,495.61/588,387.93 = 272,609.17/x
  3. Step 3: Cross multiply
    392,495.61x = 588,387.93 × 272,609.17
  4. Step 4: Simplify right side
    392,495.61x = 160,399,945,235.32
  5. Step 5: Solve for x
    x = 160,399,945,235.32/392,495.61
  6. Step 6: Final answer
    x = 408,666.85

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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.