Home / 259,747.90-389,621.85-82,309.30

Finding the Fourth Proportional to 259,747.90, 389,621.85 and 82,309.30

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Solution

The fourth proportional to 259,747.90, 389,621.85 and 82,309.30 is: 123,463.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,747.90 : 389,621.85 = 82,309.30 : x
  2. Step 2: Convert to fraction form
    259,747.90/389,621.85 = 82,309.30/x
  3. Step 3: Cross multiply
    259,747.90x = 389,621.85 × 82,309.30
  4. Step 4: Simplify right side
    259,747.90x = 32,069,501,738.21
  5. Step 5: Solve for x
    x = 32,069,501,738.21/259,747.90
  6. Step 6: Final answer
    x = 123,463.95

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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.