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Finding the Fourth Proportional to 220,200.40, 330,300.60 and 115,005.70

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Solution

The fourth proportional to 220,200.40, 330,300.60 and 115,005.70 is: 172,508.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,200.40 : 330,300.60 = 115,005.70 : x
  2. Step 2: Convert to fraction form
    220,200.40/330,300.60 = 115,005.70/x
  3. Step 3: Cross multiply
    220,200.40x = 330,300.60 × 115,005.70
  4. Step 4: Simplify right side
    220,200.40x = 37,986,451,713.42
  5. Step 5: Solve for x
    x = 37,986,451,713.42/220,200.40
  6. Step 6: Final answer
    x = 172,508.55

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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.