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Finding the Fourth Proportional to 381,324.52, 571,987.47 and 156,528.28

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Solution

The fourth proportional to 381,324.52, 571,987.47 and 156,528.28 is: 234,792.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,324.52 : 571,987.47 = 156,528.28 : x
  2. Step 2: Convert to fraction form
    381,324.52/571,987.47 = 156,528.28/x
  3. Step 3: Cross multiply
    381,324.52x = 571,987.47 × 156,528.28
  4. Step 4: Simplify right side
    381,324.52x = 89,532,212,000.71
  5. Step 5: Solve for x
    x = 89,532,212,000.71/381,324.52
  6. Step 6: Final answer
    x = 234,792.70

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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.