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Finding the Fourth Proportional to 425,805.76, 638,811.24 and 159,568.62

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Solution

The fourth proportional to 425,805.76, 638,811.24 and 159,568.62 is: 239,391.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,805.76 : 638,811.24 = 159,568.62 : x
  2. Step 2: Convert to fraction form
    425,805.76/638,811.24 = 159,568.62/x
  3. Step 3: Cross multiply
    425,805.76x = 638,811.24 × 159,568.62
  4. Step 4: Simplify right side
    425,805.76x = 101,934,228,007.29
  5. Step 5: Solve for x
    x = 101,934,228,007.29/425,805.76
  6. Step 6: Final answer
    x = 239,391.38

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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.