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Finding the Fourth Proportional to 220,841.90, 304,763.28 and 125,350.20

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Solution

The fourth proportional to 220,841.90, 304,763.28 and 125,350.20 is: 172,984.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,841.90 : 304,763.28 = 125,350.20 : x
  2. Step 2: Convert to fraction form
    220,841.90/304,763.28 = 125,350.20/x
  3. Step 3: Cross multiply
    220,841.90x = 304,763.28 × 125,350.20
  4. Step 4: Simplify right side
    220,841.90x = 38,202,138,100.66
  5. Step 5: Solve for x
    x = 38,202,138,100.66/220,841.90
  6. Step 6: Final answer
    x = 172,984.10

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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.