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Finding the Fourth Proportional to 198,620.60, 298,046.10 and 73,974.20

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Solution

The fourth proportional to 198,620.60, 298,046.10 and 73,974.20 is: 111,004.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,620.60 : 298,046.10 = 73,974.20 : x
  2. Step 2: Convert to fraction form
    198,620.60/298,046.10 = 73,974.20/x
  3. Step 3: Cross multiply
    198,620.60x = 298,046.10 × 73,974.20
  4. Step 4: Simplify right side
    198,620.60x = 22,047,721,810.62
  5. Step 5: Solve for x
    x = 22,047,721,810.62/198,620.60
  6. Step 6: Final answer
    x = 111,004.21

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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.