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Finding the Fourth Proportional to 431,229.20, 646,843.80 and 361,245.20

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Solution

The fourth proportional to 431,229.20, 646,843.80 and 361,245.20 is: 541,867.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,229.20 : 646,843.80 = 361,245.20 : x
  2. Step 2: Convert to fraction form
    431,229.20/646,843.80 = 361,245.20/x
  3. Step 3: Cross multiply
    431,229.20x = 646,843.80 × 361,245.20
  4. Step 4: Simplify right side
    431,229.20x = 233,669,217,899.76
  5. Step 5: Solve for x
    x = 233,669,217,899.76/431,229.20
  6. Step 6: Final answer
    x = 541,867.80

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Similar ratio
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1.5x scale

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.