Home / 486,412.40-729,618.60-131,481.20

Finding the Fourth Proportional to 486,412.40, 729,618.60 and 131,481.20

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Solution

The fourth proportional to 486,412.40, 729,618.60 and 131,481.20 is: 197,221.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,412.40 : 729,618.60 = 131,481.20 : x
  2. Step 2: Convert to fraction form
    486,412.40/729,618.60 = 131,481.20/x
  3. Step 3: Cross multiply
    486,412.40x = 729,618.60 × 131,481.20
  4. Step 4: Simplify right side
    486,412.40x = 95,931,129,070.32
  5. Step 5: Solve for x
    x = 95,931,129,070.32/486,412.40
  6. Step 6: Final answer
    x = 197,221.80

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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.