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Finding the Fourth Proportional to 198,616.17, 297,830.61 and 72,167.25

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Solution

The fourth proportional to 198,616.17, 297,830.61 and 72,167.25 is: 108,216.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,616.17 : 297,830.61 = 72,167.25 : x
  2. Step 2: Convert to fraction form
    198,616.17/297,830.61 = 72,167.25/x
  3. Step 3: Cross multiply
    198,616.17x = 297,830.61 × 72,167.25
  4. Step 4: Simplify right side
    198,616.17x = 21,493,616,089.52
  5. Step 5: Solve for x
    x = 21,493,616,089.52/198,616.17
  6. Step 6: Final answer
    x = 108,216.85

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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.