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Finding the Fourth Proportional to 351,717.52, 527,568.72 and 85,479.52

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Solution

The fourth proportional to 351,717.52, 527,568.72 and 85,479.52 is: 128,217.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,717.52 : 527,568.72 = 85,479.52 : x
  2. Step 2: Convert to fraction form
    351,717.52/527,568.72 = 85,479.52/x
  3. Step 3: Cross multiply
    351,717.52x = 527,568.72 × 85,479.52
  4. Step 4: Simplify right side
    351,717.52x = 45,096,320,952.61
  5. Step 5: Solve for x
    x = 45,096,320,952.61/351,717.52
  6. Step 6: Final answer
    x = 128,217.44

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1.5x scale

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.