Home / 259,912.80-389,869.20-82,433.70

Finding the Fourth Proportional to 259,912.80, 389,869.20 and 82,433.70

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Solution

The fourth proportional to 259,912.80, 389,869.20 and 82,433.70 is: 123,650.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,912.80 : 389,869.20 = 82,433.70 : x
  2. Step 2: Convert to fraction form
    259,912.80/389,869.20 = 82,433.70/x
  3. Step 3: Cross multiply
    259,912.80x = 389,869.20 × 82,433.70
  4. Step 4: Simplify right side
    259,912.80x = 32,138,360,672.04
  5. Step 5: Solve for x
    x = 32,138,360,672.04/259,912.80
  6. Step 6: Final answer
    x = 123,650.55

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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.