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Finding the Fourth Proportional to 198,348.75, 297,522.52 and 71,988.83

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Solution

The fourth proportional to 198,348.75, 297,522.52 and 71,988.83 is: 107,983.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,348.75 : 297,522.52 = 71,988.83 : x
  2. Step 2: Convert to fraction form
    198,348.75/297,522.52 = 71,988.83/x
  3. Step 3: Cross multiply
    198,348.75x = 297,522.52 × 71,988.83
  4. Step 4: Simplify right side
    198,348.75x = 21,418,296,724.79
  5. Step 5: Solve for x
    x = 21,418,296,724.79/198,348.75
  6. Step 6: Final answer
    x = 107,983.02

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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.