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Finding the Fourth Proportional to 263,103.80, 394,655.70 and 151,129.40

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Solution

The fourth proportional to 263,103.80, 394,655.70 and 151,129.40 is: 226,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,103.80 : 394,655.70 = 151,129.40 : x
  2. Step 2: Convert to fraction form
    263,103.80/394,655.70 = 151,129.40/x
  3. Step 3: Cross multiply
    263,103.80x = 394,655.70 × 151,129.40
  4. Step 4: Simplify right side
    263,103.80x = 59,644,079,147.58
  5. Step 5: Solve for x
    x = 59,644,079,147.58/263,103.80
  6. Step 6: Final answer
    x = 226,694.10

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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.