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Finding the Fourth Proportional to 198,531.20, 297,796.80 and 185,409.20

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Solution

The fourth proportional to 198,531.20, 297,796.80 and 185,409.20 is: 278,113.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,531.20 : 297,796.80 = 185,409.20 : x
  2. Step 2: Convert to fraction form
    198,531.20/297,796.80 = 185,409.20/x
  3. Step 3: Cross multiply
    198,531.20x = 297,796.80 × 185,409.20
  4. Step 4: Simplify right side
    198,531.20x = 55,214,266,450.56
  5. Step 5: Solve for x
    x = 55,214,266,450.56/198,531.20
  6. Step 6: Final answer
    x = 278,113.80

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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.