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Finding the Fourth Proportional to 198,425.38, 297,637.26 and 72,065.38

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Solution

The fourth proportional to 198,425.38, 297,637.26 and 72,065.38 is: 108,097.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,425.38 : 297,637.26 = 72,065.38 : x
  2. Step 2: Convert to fraction form
    198,425.38/297,637.26 = 72,065.38/x
  3. Step 3: Cross multiply
    198,425.38x = 297,637.26 × 72,065.38
  4. Step 4: Simplify right side
    198,425.38x = 21,449,342,244.06
  5. Step 5: Solve for x
    x = 21,449,342,244.06/198,425.38
  6. Step 6: Final answer
    x = 108,097.78

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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.