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Finding the Fourth Proportional to 425,493.46, 638,333.52 and 125,997.40

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Solution

The fourth proportional to 425,493.46, 638,333.52 and 125,997.40 is: 189,023.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,493.46 : 638,333.52 = 125,997.40 : x
  2. Step 2: Convert to fraction form
    425,493.46/638,333.52 = 125,997.40/x
  3. Step 3: Cross multiply
    425,493.46x = 638,333.52 × 125,997.40
  4. Step 4: Simplify right side
    425,493.46x = 80,428,363,852.85
  5. Step 5: Solve for x
    x = 80,428,363,852.85/425,493.46
  6. Step 6: Final answer
    x = 189,023.74

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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.