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Finding the Fourth Proportional to 425,600.32, 638,493.78 and 126,104.44

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Solution

The fourth proportional to 425,600.32, 638,493.78 and 126,104.44 is: 189,184.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,600.32 : 638,493.78 = 126,104.44 : x
  2. Step 2: Convert to fraction form
    425,600.32/638,493.78 = 126,104.44/x
  3. Step 3: Cross multiply
    425,600.32x = 638,493.78 × 126,104.44
  4. Step 4: Simplify right side
    425,600.32x = 80,516,900,570.38
  5. Step 5: Solve for x
    x = 80,516,900,570.38/425,600.32
  6. Step 6: Final answer
    x = 189,184.30

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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.