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Finding the Fourth Proportional to 220,200.80, 329,912.40 and 136,997.60

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Solution

The fourth proportional to 220,200.80, 329,912.40 and 136,997.60 is: 205,254.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,200.80 : 329,912.40 = 136,997.60 : x
  2. Step 2: Convert to fraction form
    220,200.80/329,912.40 = 136,997.60/x
  3. Step 3: Cross multiply
    220,200.80x = 329,912.40 × 136,997.60
  4. Step 4: Simplify right side
    220,200.80x = 45,197,207,010.24
  5. Step 5: Solve for x
    x = 45,197,207,010.24/220,200.80
  6. Step 6: Final answer
    x = 205,254.51

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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.