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Finding the Fourth Proportional to 217,276.60, 325,939.20 and 67,515.70

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Solution

The fourth proportional to 217,276.60, 325,939.20 and 67,515.70 is: 101,281.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,276.60 : 325,939.20 = 67,515.70 : x
  2. Step 2: Convert to fraction form
    217,276.60/325,939.20 = 67,515.70/x
  3. Step 3: Cross multiply
    217,276.60x = 325,939.20 × 67,515.70
  4. Step 4: Simplify right side
    217,276.60x = 22,006,013,245.44
  5. Step 5: Solve for x
    x = 22,006,013,245.44/217,276.60
  6. Step 6: Final answer
    x = 101,281.10

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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.