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Finding the Fourth Proportional to 299,414.64, 449,120.70 and 121,879.56

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Solution

The fourth proportional to 299,414.64, 449,120.70 and 121,879.56 is: 182,818.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,414.64 : 449,120.70 = 121,879.56 : x
  2. Step 2: Convert to fraction form
    299,414.64/449,120.70 = 121,879.56/x
  3. Step 3: Cross multiply
    299,414.64x = 449,120.70 × 121,879.56
  4. Step 4: Simplify right side
    299,414.64x = 54,738,633,302.89
  5. Step 5: Solve for x
    x = 54,738,633,302.89/299,414.64
  6. Step 6: Final answer
    x = 182,818.83

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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.