Home / 287,736.20-431,604.30-110,151.80

Finding the Fourth Proportional to 287,736.20, 431,604.30 and 110,151.80

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Solution

The fourth proportional to 287,736.20, 431,604.30 and 110,151.80 is: 165,227.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,736.20 : 431,604.30 = 110,151.80 : x
  2. Step 2: Convert to fraction form
    287,736.20/431,604.30 = 110,151.80/x
  3. Step 3: Cross multiply
    287,736.20x = 431,604.30 × 110,151.80
  4. Step 4: Simplify right side
    287,736.20x = 47,541,990,532.74
  5. Step 5: Solve for x
    x = 47,541,990,532.74/287,736.20
  6. Step 6: Final answer
    x = 165,227.70

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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.