Home / 481,330.80-721,996.20-126,380.70

Finding the Fourth Proportional to 481,330.80, 721,996.20 and 126,380.70

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Solution

The fourth proportional to 481,330.80, 721,996.20 and 126,380.70 is: 189,571.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,330.80 : 721,996.20 = 126,380.70 : x
  2. Step 2: Convert to fraction form
    481,330.80/721,996.20 = 126,380.70/x
  3. Step 3: Cross multiply
    481,330.80x = 721,996.20 × 126,380.70
  4. Step 4: Simplify right side
    481,330.80x = 91,246,385,153.34
  5. Step 5: Solve for x
    x = 91,246,385,153.34/481,330.80
  6. Step 6: Final answer
    x = 189,571.05

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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.