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Finding the Fourth Proportional to 220,620.20, 330,833.10 and 87,456.20

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Solution

The fourth proportional to 220,620.20, 330,833.10 and 87,456.20 is: 131,145.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,620.20 : 330,833.10 = 87,456.20 : x
  2. Step 2: Convert to fraction form
    220,620.20/330,833.10 = 87,456.20/x
  3. Step 3: Cross multiply
    220,620.20x = 330,833.10 × 87,456.20
  4. Step 4: Simplify right side
    220,620.20x = 28,933,405,760.22
  5. Step 5: Solve for x
    x = 28,933,405,760.22/220,620.20
  6. Step 6: Final answer
    x = 131,145.77

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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.