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Finding the Fourth Proportional to 351,616.89, 527,425.33 and 85,375.61

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Solution

The fourth proportional to 351,616.89, 527,425.33 and 85,375.61 is: 128,063.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,616.89 : 527,425.33 = 85,375.61 : x
  2. Step 2: Convert to fraction form
    351,616.89/527,425.33 = 85,375.61/x
  3. Step 3: Cross multiply
    351,616.89x = 527,425.33 × 85,375.61
  4. Step 4: Simplify right side
    351,616.89x = 45,029,258,725.64
  5. Step 5: Solve for x
    x = 45,029,258,725.64/351,616.89
  6. Step 6: Final answer
    x = 128,063.41

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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.