Home / 453,031.20-679,287.60-137,440.80

Finding the Fourth Proportional to 453,031.20, 679,287.60 and 137,440.80

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Solution

The fourth proportional to 453,031.20, 679,287.60 and 137,440.80 is: 206,082.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,031.20 : 679,287.60 = 137,440.80 : x
  2. Step 2: Convert to fraction form
    453,031.20/679,287.60 = 137,440.80/x
  3. Step 3: Cross multiply
    453,031.20x = 679,287.60 × 137,440.80
  4. Step 4: Simplify right side
    453,031.20x = 93,361,831,174.08
  5. Step 5: Solve for x
    x = 93,361,831,174.08/453,031.20
  6. Step 6: Final answer
    x = 206,082.56

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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.