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Finding the Fourth Proportional to 198,616.53, 297,831.17 and 72,167.64

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Solution

The fourth proportional to 198,616.53, 297,831.17 and 72,167.64 is: 108,217.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,616.53 : 297,831.17 = 72,167.64 : x
  2. Step 2: Convert to fraction form
    198,616.53/297,831.17 = 72,167.64/x
  3. Step 3: Cross multiply
    198,616.53x = 297,831.17 × 72,167.64
  4. Step 4: Simplify right side
    198,616.53x = 21,493,772,296.50
  5. Step 5: Solve for x
    x = 21,493,772,296.50/198,616.53
  6. Step 6: Final answer
    x = 108,217.44

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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.