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Finding the Fourth Proportional to 425,433.24, 638,397.90 and 159,380.64

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Solution

The fourth proportional to 425,433.24, 638,397.90 and 159,380.64 is: 239,163.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,433.24 : 638,397.90 = 159,380.64 : x
  2. Step 2: Convert to fraction form
    425,433.24/638,397.90 = 159,380.64/x
  3. Step 3: Cross multiply
    425,433.24x = 638,397.90 × 159,380.64
  4. Step 4: Simplify right side
    425,433.24x = 101,748,265,876.66
  5. Step 5: Solve for x
    x = 101,748,265,876.66/425,433.24
  6. Step 6: Final answer
    x = 239,163.88

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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.