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Finding the Fourth Proportional to 221,676.20, 332,417.10 and 88,512.20

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Solution

The fourth proportional to 221,676.20, 332,417.10 and 88,512.20 is: 132,729.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,676.20 : 332,417.10 = 88,512.20 : x
  2. Step 2: Convert to fraction form
    221,676.20/332,417.10 = 88,512.20/x
  3. Step 3: Cross multiply
    221,676.20x = 332,417.10 × 88,512.20
  4. Step 4: Simplify right side
    221,676.20x = 29,422,968,838.62
  5. Step 5: Solve for x
    x = 29,422,968,838.62/221,676.20
  6. Step 6: Final answer
    x = 132,729.49

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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.