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Finding the Fourth Proportional to 278,198.55, 417,330.50 and 88,592.54

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Solution

The fourth proportional to 278,198.55, 417,330.50 and 88,592.54 is: 132,899.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,198.55 : 417,330.50 = 88,592.54 : x
  2. Step 2: Convert to fraction form
    278,198.55/417,330.50 = 88,592.54/x
  3. Step 3: Cross multiply
    278,198.55x = 417,330.50 × 88,592.54
  4. Step 4: Simplify right side
    278,198.55x = 36,972,366,484.85
  5. Step 5: Solve for x
    x = 36,972,366,484.85/278,198.55
  6. Step 6: Final answer
    x = 132,899.21

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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.