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Finding the Fourth Proportional to 278,700.54, 418,059.48 and 132,608.43

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Solution

The fourth proportional to 278,700.54, 418,059.48 and 132,608.43 is: 198,916.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,700.54 : 418,059.48 = 132,608.43 : x
  2. Step 2: Convert to fraction form
    278,700.54/418,059.48 = 132,608.43/x
  3. Step 3: Cross multiply
    278,700.54x = 418,059.48 × 132,608.43
  4. Step 4: Simplify right side
    278,700.54x = 55,438,213,937.57
  5. Step 5: Solve for x
    x = 55,438,213,937.57/278,700.54
  6. Step 6: Final answer
    x = 198,916.78

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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.