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Finding the Fourth Proportional to 425,876.92, 638,818.62 and 189,156.04

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Solution

The fourth proportional to 425,876.92, 638,818.62 and 189,156.04 is: 283,735.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,876.92 : 638,818.62 = 189,156.04 : x
  2. Step 2: Convert to fraction form
    425,876.92/638,818.62 = 189,156.04/x
  3. Step 3: Cross multiply
    425,876.92x = 638,818.62 × 189,156.04
  4. Step 4: Simplify right side
    425,876.92x = 120,836,400,437.47
  5. Step 5: Solve for x
    x = 120,836,400,437.47/425,876.92
  6. Step 6: Final answer
    x = 283,735.50

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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.