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Finding the Fourth Proportional to 287,711.29, 431,575.14 and 88,027.26

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Solution

The fourth proportional to 287,711.29, 431,575.14 and 88,027.26 is: 132,043.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,711.29 : 431,575.14 = 88,027.26 : x
  2. Step 2: Convert to fraction form
    287,711.29/431,575.14 = 88,027.26/x
  3. Step 3: Cross multiply
    287,711.29x = 431,575.14 × 88,027.26
  4. Step 4: Simplify right side
    287,711.29x = 37,990,375,274.86
  5. Step 5: Solve for x
    x = 37,990,375,274.86/287,711.29
  6. Step 6: Final answer
    x = 132,043.39

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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.