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Finding the Fourth Proportional to 392,520.09, 541,676.19 and 220,414.11

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Solution

The fourth proportional to 392,520.09, 541,676.19 and 220,414.11 is: 304,170.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,520.09 : 541,676.19 = 220,414.11 : x
  2. Step 2: Convert to fraction form
    392,520.09/541,676.19 = 220,414.11/x
  3. Step 3: Cross multiply
    392,520.09x = 541,676.19 × 220,414.11
  4. Step 4: Simplify right side
    392,520.09x = 119,393,075,327.04
  5. Step 5: Solve for x
    x = 119,393,075,327.04/392,520.09
  6. Step 6: Final answer
    x = 304,170.61

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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.