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Finding the Fourth Proportional to 171,908.40, 257,862.60 and 59,715.30

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Solution

The fourth proportional to 171,908.40, 257,862.60 and 59,715.30 is: 89,572.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,908.40 : 257,862.60 = 59,715.30 : x
  2. Step 2: Convert to fraction form
    171,908.40/257,862.60 = 59,715.30/x
  3. Step 3: Cross multiply
    171,908.40x = 257,862.60 × 59,715.30
  4. Step 4: Simplify right side
    171,908.40x = 15,398,342,517.78
  5. Step 5: Solve for x
    x = 15,398,342,517.78/171,908.40
  6. Step 6: Final answer
    x = 89,572.95

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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.