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Finding the Fourth Proportional to 425,499.75, 638,358.98 and 159,264.09

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Solution

The fourth proportional to 425,499.75, 638,358.98 and 159,264.09 is: 238,937.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,499.75 : 638,358.98 = 159,264.09 : x
  2. Step 2: Convert to fraction form
    425,499.75/638,358.98 = 159,264.09/x
  3. Step 3: Cross multiply
    425,499.75x = 638,358.98 × 159,264.09
  4. Step 4: Simplify right side
    425,499.75x = 101,667,661,246.71
  5. Step 5: Solve for x
    x = 101,667,661,246.71/425,499.75
  6. Step 6: Final answer
    x = 238,937.06

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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.