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Finding the Fourth Proportional to 386,874.68, 580,221.30 and 187,096.28

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Solution

The fourth proportional to 386,874.68, 580,221.30 and 187,096.28 is: 280,600.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,874.68 : 580,221.30 = 187,096.28 : x
  2. Step 2: Convert to fraction form
    386,874.68/580,221.30 = 187,096.28/x
  3. Step 3: Cross multiply
    386,874.68x = 580,221.30 × 187,096.28
  4. Step 4: Simplify right side
    386,874.68x = 108,557,246,806.76
  5. Step 5: Solve for x
    x = 108,557,246,806.76/386,874.68
  6. Step 6: Final answer
    x = 280,600.55

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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.