Home / 287,705.24-431,542.20-88,025.66

Finding the Fourth Proportional to 287,705.24, 431,542.20 and 88,025.66

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Solution

The fourth proportional to 287,705.24, 431,542.20 and 88,025.66 is: 132,033.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,705.24 : 431,542.20 = 88,025.66 : x
  2. Step 2: Convert to fraction form
    287,705.24/431,542.20 = 88,025.66/x
  3. Step 3: Cross multiply
    287,705.24x = 431,542.20 × 88,025.66
  4. Step 4: Simplify right side
    287,705.24x = 37,986,786,972.85
  5. Step 5: Solve for x
    x = 37,986,786,972.85/287,705.24
  6. Step 6: Final answer
    x = 132,033.70

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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.