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Finding the Fourth Proportional to 425,335.31, 638,002.98 and 125,792.52

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Solution

The fourth proportional to 425,335.31, 638,002.98 and 125,792.52 is: 188,688.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,335.31 : 638,002.98 = 125,792.52 : x
  2. Step 2: Convert to fraction form
    425,335.31/638,002.98 = 125,792.52/x
  3. Step 3: Cross multiply
    425,335.31x = 638,002.98 × 125,792.52
  4. Step 4: Simplify right side
    425,335.31x = 80,256,002,621.71
  5. Step 5: Solve for x
    x = 80,256,002,621.71/425,335.31
  6. Step 6: Final answer
    x = 188,688.79

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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.