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Finding the Fourth Proportional to 198,421.68, 273,793.20 and 113,522.88

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Solution

The fourth proportional to 198,421.68, 273,793.20 and 113,522.88 is: 156,645.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,421.68 : 273,793.20 = 113,522.88 : x
  2. Step 2: Convert to fraction form
    198,421.68/273,793.20 = 113,522.88/x
  3. Step 3: Cross multiply
    198,421.68x = 273,793.20 × 113,522.88
  4. Step 4: Simplify right side
    198,421.68x = 31,081,792,588.42
  5. Step 5: Solve for x
    x = 31,081,792,588.42/198,421.68
  6. Step 6: Final answer
    x = 156,645.14

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