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Finding the Fourth Proportional to 663,635.20, 995,452.80 and 243,212.80

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Solution

The fourth proportional to 663,635.20, 995,452.80 and 243,212.80 is: 364,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,635.20 : 995,452.80 = 243,212.80 : x
  2. Step 2: Convert to fraction form
    663,635.20/995,452.80 = 243,212.80/x
  3. Step 3: Cross multiply
    663,635.20x = 995,452.80 × 243,212.80
  4. Step 4: Simplify right side
    663,635.20x = 242,106,862,755.84
  5. Step 5: Solve for x
    x = 242,106,862,755.84/663,635.20
  6. Step 6: Final answer
    x = 364,819.20

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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.