Home / 458,002.20-687,003.30-121,042.20

Finding the Fourth Proportional to 458,002.20, 687,003.30 and 121,042.20

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Solution

The fourth proportional to 458,002.20, 687,003.30 and 121,042.20 is: 181,563.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,002.20 : 687,003.30 = 121,042.20 : x
  2. Step 2: Convert to fraction form
    458,002.20/687,003.30 = 121,042.20/x
  3. Step 3: Cross multiply
    458,002.20x = 687,003.30 × 121,042.20
  4. Step 4: Simplify right side
    458,002.20x = 83,156,390,839.26
  5. Step 5: Solve for x
    x = 83,156,390,839.26/458,002.20
  6. Step 6: Final answer
    x = 181,563.30

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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.