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Finding the Fourth Proportional to 485,839.76, 728,847.14 and 232,905.92

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Solution

The fourth proportional to 485,839.76, 728,847.14 and 232,905.92 is: 349,400.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,839.76 : 728,847.14 = 232,905.92 : x
  2. Step 2: Convert to fraction form
    485,839.76/728,847.14 = 232,905.92/x
  3. Step 3: Cross multiply
    485,839.76x = 728,847.14 × 232,905.92
  4. Step 4: Simplify right side
    485,839.76x = 169,752,813,681.07
  5. Step 5: Solve for x
    x = 169,752,813,681.07/485,839.76
  6. Step 6: Final answer
    x = 349,400.83

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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.