Home / 220,470.57-304,240.56-129,830.36

Finding the Fourth Proportional to 220,470.57, 304,240.56 and 129,830.36

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Solution

The fourth proportional to 220,470.57, 304,240.56 and 129,830.36 is: 179,160.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,470.57 : 304,240.56 = 129,830.36 : x
  2. Step 2: Convert to fraction form
    220,470.57/304,240.56 = 129,830.36/x
  3. Step 3: Cross multiply
    220,470.57x = 304,240.56 × 129,830.36
  4. Step 4: Simplify right side
    220,470.57x = 39,499,659,910.20
  5. Step 5: Solve for x
    x = 39,499,659,910.20/220,470.57
  6. Step 6: Final answer
    x = 179,160.69

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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.