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Finding the Fourth Proportional to 278,285.41, 417,460.92 and 88,679.80

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Solution

The fourth proportional to 278,285.41, 417,460.92 and 88,679.80 is: 133,030.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,285.41 : 417,460.92 = 88,679.80 : x
  2. Step 2: Convert to fraction form
    278,285.41/417,460.92 = 88,679.80/x
  3. Step 3: Cross multiply
    278,285.41x = 417,460.92 × 88,679.80
  4. Step 4: Simplify right side
    278,285.41x = 37,020,350,893.42
  5. Step 5: Solve for x
    x = 37,020,350,893.42/278,285.41
  6. Step 6: Final answer
    x = 133,030.15

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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.