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Finding the Fourth Proportional to 220,229.38, 330,393.30 and 70,478.65

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Solution

The fourth proportional to 220,229.38, 330,393.30 and 70,478.65 is: 105,733.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,229.38 : 330,393.30 = 70,478.65 : x
  2. Step 2: Convert to fraction form
    220,229.38/330,393.30 = 70,478.65/x
  3. Step 3: Cross multiply
    220,229.38x = 330,393.30 × 70,478.65
  4. Step 4: Simplify right side
    220,229.38x = 23,285,673,753.05
  5. Step 5: Solve for x
    x = 23,285,673,753.05/220,229.38
  6. Step 6: Final answer
    x = 105,733.73

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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.