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Finding the Fourth Proportional to 351,951.67, 527,917.18 and 85,708.32

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Solution

The fourth proportional to 351,951.67, 527,917.18 and 85,708.32 is: 128,559.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,951.67 : 527,917.18 = 85,708.32 : x
  2. Step 2: Convert to fraction form
    351,951.67/527,917.18 = 85,708.32/x
  3. Step 3: Cross multiply
    351,951.67x = 527,917.18 × 85,708.32
  4. Step 4: Simplify right side
    351,951.67x = 45,246,894,596.94
  5. Step 5: Solve for x
    x = 45,246,894,596.94/351,951.67
  6. Step 6: Final answer
    x = 128,559.97

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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.