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Finding the Fourth Proportional to 394,052.16, 543,752.71 and 221,965.33

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Solution

The fourth proportional to 394,052.16, 543,752.71 and 221,965.33 is: 306,290.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,052.16 : 543,752.71 = 221,965.33 : x
  2. Step 2: Convert to fraction form
    394,052.16/543,752.71 = 221,965.33/x
  3. Step 3: Cross multiply
    394,052.16x = 543,752.71 × 221,965.33
  4. Step 4: Simplify right side
    394,052.16x = 120,694,250,067.34
  5. Step 5: Solve for x
    x = 120,694,250,067.34/394,052.16
  6. Step 6: Final answer
    x = 306,290.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.