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Finding the Fourth Proportional to 278,491.44, 417,805.20 and 88,951.85

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Solution

The fourth proportional to 278,491.44, 417,805.20 and 88,951.85 is: 133,449.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,491.44 : 417,805.20 = 88,951.85 : x
  2. Step 2: Convert to fraction form
    278,491.44/417,805.20 = 88,951.85/x
  3. Step 3: Cross multiply
    278,491.44x = 417,805.20 × 88,951.85
  4. Step 4: Simplify right side
    278,491.44x = 37,164,543,390.59
  5. Step 5: Solve for x
    x = 37,164,543,390.59/278,491.44
  6. Step 6: Final answer
    x = 133,449.50

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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.