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Finding the Fourth Proportional to 259,726.60, 389,589.90 and 101,960.20

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Solution

The fourth proportional to 259,726.60, 389,589.90 and 101,960.20 is: 152,940.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,726.60 : 389,589.90 = 101,960.20 : x
  2. Step 2: Convert to fraction form
    259,726.60/389,589.90 = 101,960.20/x
  3. Step 3: Cross multiply
    259,726.60x = 389,589.90 × 101,960.20
  4. Step 4: Simplify right side
    259,726.60x = 39,722,664,121.98
  5. Step 5: Solve for x
    x = 39,722,664,121.98/259,726.60
  6. Step 6: Final answer
    x = 152,940.30

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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.