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Finding the Fourth Proportional to 198,601.60, 297,955.20 and 86,233.60

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Solution

The fourth proportional to 198,601.60, 297,955.20 and 86,233.60 is: 129,373.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,601.60 : 297,955.20 = 86,233.60 : x
  2. Step 2: Convert to fraction form
    198,601.60/297,955.20 = 86,233.60/x
  3. Step 3: Cross multiply
    198,601.60x = 297,955.20 × 86,233.60
  4. Step 4: Simplify right side
    198,601.60x = 25,693,749,534.72
  5. Step 5: Solve for x
    x = 25,693,749,534.72/198,601.60
  6. Step 6: Final answer
    x = 129,373.33

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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.