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Finding the Fourth Proportional to 278,273.52, 417,440.43 and 88,689.42

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Solution

The fourth proportional to 278,273.52, 417,440.43 and 88,689.42 is: 133,043.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,273.52 : 417,440.43 = 88,689.42 : x
  2. Step 2: Convert to fraction form
    278,273.52/417,440.43 = 88,689.42/x
  3. Step 3: Cross multiply
    278,273.52x = 417,440.43 × 88,689.42
  4. Step 4: Simplify right side
    278,273.52x = 37,022,549,621.25
  5. Step 5: Solve for x
    x = 37,022,549,621.25/278,273.52
  6. Step 6: Final answer
    x = 133,043.74

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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.