Home / 259,747.85-389,680.23-91,279.80

Finding the Fourth Proportional to 259,747.85, 389,680.23 and 91,279.80

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Solution

The fourth proportional to 259,747.85, 389,680.23 and 91,279.80 is: 136,940.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,747.85 : 389,680.23 = 91,279.80 : x
  2. Step 2: Convert to fraction form
    259,747.85/389,680.23 = 91,279.80/x
  3. Step 3: Cross multiply
    259,747.85x = 389,680.23 × 91,279.80
  4. Step 4: Simplify right side
    259,747.85x = 35,569,933,458.35
  5. Step 5: Solve for x
    x = 35,569,933,458.35/259,747.85
  6. Step 6: Final answer
    x = 136,940.24

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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.