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Finding the Fourth Proportional to 198,350.88, 297,525.71 and 71,990.96

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Solution

The fourth proportional to 198,350.88, 297,525.71 and 71,990.96 is: 107,986.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,350.88 : 297,525.71 = 71,990.96 : x
  2. Step 2: Convert to fraction form
    198,350.88/297,525.71 = 71,990.96/x
  3. Step 3: Cross multiply
    198,350.88x = 297,525.71 × 71,990.96
  4. Step 4: Simplify right side
    198,350.88x = 21,419,159,640.00
  5. Step 5: Solve for x
    x = 21,419,159,640.00/198,350.88
  6. Step 6: Final answer
    x = 107,986.21

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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.