Home / 259,932.15-389,935.42-80,032.80

Finding the Fourth Proportional to 259,932.15, 389,935.42 and 80,032.80

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Solution

The fourth proportional to 259,932.15, 389,935.42 and 80,032.80 is: 120,060.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,932.15 : 389,935.42 = 80,032.80 : x
  2. Step 2: Convert to fraction form
    259,932.15/389,935.42 = 80,032.80/x
  3. Step 3: Cross multiply
    259,932.15x = 389,935.42 × 80,032.80
  4. Step 4: Simplify right side
    259,932.15x = 31,207,621,819.44
  5. Step 5: Solve for x
    x = 31,207,621,819.44/259,932.15
  6. Step 6: Final answer
    x = 120,060.65

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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.