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Finding the Fourth Proportional to 221,642.06, 332,469.81 and 71,878.22

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Solution

The fourth proportional to 221,642.06, 332,469.81 and 71,878.22 is: 107,819.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,642.06 : 332,469.81 = 71,878.22 : x
  2. Step 2: Convert to fraction form
    221,642.06/332,469.81 = 71,878.22/x
  3. Step 3: Cross multiply
    221,642.06x = 332,469.81 × 71,878.22
  4. Step 4: Simplify right side
    221,642.06x = 23,897,338,146.54
  5. Step 5: Solve for x
    x = 23,897,338,146.54/221,642.06
  6. Step 6: Final answer
    x = 107,819.51

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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.