Home / 220,582.26-304,321.05-129,882.78

Finding the Fourth Proportional to 220,582.26, 304,321.05 and 129,882.78

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Solution

The fourth proportional to 220,582.26, 304,321.05 and 129,882.78 is: 179,189.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,582.26 : 304,321.05 = 129,882.78 : x
  2. Step 2: Convert to fraction form
    220,582.26/304,321.05 = 129,882.78/x
  3. Step 3: Cross multiply
    220,582.26x = 304,321.05 × 129,882.78
  4. Step 4: Simplify right side
    220,582.26x = 39,526,063,986.52
  5. Step 5: Solve for x
    x = 39,526,063,986.52/220,582.26
  6. Step 6: Final answer
    x = 179,189.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.