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Finding the Fourth Proportional to 198,306.20, 297,629.40 and 80,062.40

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Solution

The fourth proportional to 198,306.20, 297,629.40 and 80,062.40 is: 120,162.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,306.20 : 297,629.40 = 80,062.40 : x
  2. Step 2: Convert to fraction form
    198,306.20/297,629.40 = 80,062.40/x
  3. Step 3: Cross multiply
    198,306.20x = 297,629.40 × 80,062.40
  4. Step 4: Simplify right side
    198,306.20x = 23,828,924,074.56
  5. Step 5: Solve for x
    x = 23,828,924,074.56/198,306.20
  6. Step 6: Final answer
    x = 120,162.27

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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.