Home / 260,789.27-391,244.92-80,865.23

Finding the Fourth Proportional to 260,789.27, 391,244.92 and 80,865.23

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Solution

The fourth proportional to 260,789.27, 391,244.92 and 80,865.23 is: 121,316.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,789.27 : 391,244.92 = 80,865.23 : x
  2. Step 2: Convert to fraction form
    260,789.27/391,244.92 = 80,865.23/x
  3. Step 3: Cross multiply
    260,789.27x = 391,244.92 × 80,865.23
  4. Step 4: Simplify right side
    260,789.27x = 31,638,108,283.74
  5. Step 5: Solve for x
    x = 31,638,108,283.74/260,789.27
  6. Step 6: Final answer
    x = 121,316.76

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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.