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Finding the Fourth Proportional to 425,843.73, 638,740.35 and 159,581.88

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Solution

The fourth proportional to 425,843.73, 638,740.35 and 159,581.88 is: 239,363.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,843.73 : 638,740.35 = 159,581.88 : x
  2. Step 2: Convert to fraction form
    425,843.73/638,740.35 = 159,581.88/x
  3. Step 3: Cross multiply
    425,843.73x = 638,740.35 × 159,581.88
  4. Step 4: Simplify right side
    425,843.73x = 101,931,385,884.86
  5. Step 5: Solve for x
    x = 101,931,385,884.86/425,843.73
  6. Step 6: Final answer
    x = 239,363.36

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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.