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Finding the Fourth Proportional to 278,456.94, 417,753.45 and 88,917.35

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Solution

The fourth proportional to 278,456.94, 417,753.45 and 88,917.35 is: 133,397.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,456.94 : 417,753.45 = 88,917.35 : x
  2. Step 2: Convert to fraction form
    278,456.94/417,753.45 = 88,917.35/x
  3. Step 3: Cross multiply
    278,456.94x = 417,753.45 × 88,917.35
  4. Step 4: Simplify right side
    278,456.94x = 37,145,527,638.59
  5. Step 5: Solve for x
    x = 37,145,527,638.59/278,456.94
  6. Step 6: Final answer
    x = 133,397.74

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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.