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Finding the Fourth Proportional to 424,200.92, 636,286.80 and 108,660.56

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Solution

The fourth proportional to 424,200.92, 636,286.80 and 108,660.56 is: 162,987.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,200.92 : 636,286.80 = 108,660.56 : x
  2. Step 2: Convert to fraction form
    424,200.92/636,286.80 = 108,660.56/x
  3. Step 3: Cross multiply
    424,200.92x = 636,286.80 × 108,660.56
  4. Step 4: Simplify right side
    424,200.92x = 69,139,280,008.61
  5. Step 5: Solve for x
    x = 69,139,280,008.61/424,200.92
  6. Step 6: Final answer
    x = 162,987.11

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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.