Home / 279,220.80-418,831.20-172,932.60

Finding the Fourth Proportional to 279,220.80, 418,831.20 and 172,932.60

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Solution

The fourth proportional to 279,220.80, 418,831.20 and 172,932.60 is: 259,398.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,220.80 : 418,831.20 = 172,932.60 : x
  2. Step 2: Convert to fraction form
    279,220.80/418,831.20 = 172,932.60/x
  3. Step 3: Cross multiply
    279,220.80x = 418,831.20 × 172,932.60
  4. Step 4: Simplify right side
    279,220.80x = 72,429,568,377.12
  5. Step 5: Solve for x
    x = 72,429,568,377.12/279,220.80
  6. Step 6: Final answer
    x = 259,398.90

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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.