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Finding the Fourth Proportional to 263,162.72, 394,782.96 and 76,149.92

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Solution

The fourth proportional to 263,162.72, 394,782.96 and 76,149.92 is: 114,236.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,162.72 : 394,782.96 = 76,149.92 : x
  2. Step 2: Convert to fraction form
    263,162.72/394,782.96 = 76,149.92/x
  3. Step 3: Cross multiply
    263,162.72x = 394,782.96 × 76,149.92
  4. Step 4: Simplify right side
    263,162.72x = 30,062,690,821.36
  5. Step 5: Solve for x
    x = 30,062,690,821.36/263,162.72
  6. Step 6: Final answer
    x = 114,236.13

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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.