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Finding the Fourth Proportional to 220,276.80, 330,544.80 and 80,049.60

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Solution

The fourth proportional to 220,276.80, 330,544.80 and 80,049.60 is: 120,121.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,276.80 : 330,544.80 = 80,049.60 : x
  2. Step 2: Convert to fraction form
    220,276.80/330,544.80 = 80,049.60/x
  3. Step 3: Cross multiply
    220,276.80x = 330,544.80 × 80,049.60
  4. Step 4: Simplify right side
    220,276.80x = 26,459,979,022.08
  5. Step 5: Solve for x
    x = 26,459,979,022.08/220,276.80
  6. Step 6: Final answer
    x = 120,121.50

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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.