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Finding the Fourth Proportional to 220,566.48, 330,959.07 and 87,443.79

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Solution

The fourth proportional to 220,566.48, 330,959.07 and 87,443.79 is: 131,209.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,566.48 : 330,959.07 = 87,443.79 : x
  2. Step 2: Convert to fraction form
    220,566.48/330,959.07 = 87,443.79/x
  3. Step 3: Cross multiply
    220,566.48x = 330,959.07 × 87,443.79
  4. Step 4: Simplify right side
    220,566.48x = 28,940,315,415.68
  5. Step 5: Solve for x
    x = 28,940,315,415.68/220,566.48
  6. Step 6: Final answer
    x = 131,209.04

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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.