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Finding the Fourth Proportional to 351,729.54, 527,589.72 and 85,489.29

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Solution

The fourth proportional to 351,729.54, 527,589.72 and 85,489.29 is: 128,232.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,729.54 : 527,589.72 = 85,489.29 : x
  2. Step 2: Convert to fraction form
    351,729.54/527,589.72 = 85,489.29/x
  3. Step 3: Cross multiply
    351,729.54x = 527,589.72 × 85,489.29
  4. Step 4: Simplify right side
    351,729.54x = 45,103,270,574.10
  5. Step 5: Solve for x
    x = 45,103,270,574.10/351,729.54
  6. Step 6: Final answer
    x = 128,232.82

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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.