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Finding the Fourth Proportional to 198,999.59, 274,615.88 and 108,353.90

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Solution

The fourth proportional to 198,999.59, 274,615.88 and 108,353.90 is: 149,526.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,999.59 : 274,615.88 = 108,353.90 : x
  2. Step 2: Convert to fraction form
    198,999.59/274,615.88 = 108,353.90/x
  3. Step 3: Cross multiply
    198,999.59x = 274,615.88 × 108,353.90
  4. Step 4: Simplify right side
    198,999.59x = 29,755,701,744.70
  5. Step 5: Solve for x
    x = 29,755,701,744.70/198,999.59
  6. Step 6: Final answer
    x = 149,526.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.