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Finding the Fourth Proportional to 220,132.80, 330,199.20 and 205,261.20

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Solution

The fourth proportional to 220,132.80, 330,199.20 and 205,261.20 is: 307,891.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,132.80 : 330,199.20 = 205,261.20 : x
  2. Step 2: Convert to fraction form
    220,132.80/330,199.20 = 205,261.20/x
  3. Step 3: Cross multiply
    220,132.80x = 330,199.20 × 205,261.20
  4. Step 4: Simplify right side
    220,132.80x = 67,777,084,031.04
  5. Step 5: Solve for x
    x = 67,777,084,031.04/220,132.80
  6. Step 6: Final answer
    x = 307,891.80

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1.5x scale

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.