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Finding the Fourth Proportional to 198,625.60, 298,053.60 and 73,979.20

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Solution

The fourth proportional to 198,625.60, 298,053.60 and 73,979.20 is: 111,011.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,625.60 : 298,053.60 = 73,979.20 : x
  2. Step 2: Convert to fraction form
    198,625.60/298,053.60 = 73,979.20/x
  3. Step 3: Cross multiply
    198,625.60x = 298,053.60 × 73,979.20
  4. Step 4: Simplify right side
    198,625.60x = 22,049,766,885.12
  5. Step 5: Solve for x
    x = 22,049,766,885.12/198,625.60
  6. Step 6: Final answer
    x = 111,011.71

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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.