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Finding the Fourth Proportional to 220,642.08, 330,672.25 and 87,449.73

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Solution

The fourth proportional to 220,642.08, 330,672.25 and 87,449.73 is: 131,059.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,642.08 : 330,672.25 = 87,449.73 : x
  2. Step 2: Convert to fraction form
    220,642.08/330,672.25 = 87,449.73/x
  3. Step 3: Cross multiply
    220,642.08x = 330,672.25 × 87,449.73
  4. Step 4: Simplify right side
    220,642.08x = 28,917,198,980.99
  5. Step 5: Solve for x
    x = 28,917,198,980.99/220,642.08
  6. Step 6: Final answer
    x = 131,059.31

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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.