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Finding the Fourth Proportional to 263,753.40, 395,584.20 and 74,168.75

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Solution

The fourth proportional to 263,753.40, 395,584.20 and 74,168.75 is: 111,240.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,753.40 : 395,584.20 = 74,168.75 : x
  2. Step 2: Convert to fraction form
    263,753.40/395,584.20 = 74,168.75/x
  3. Step 3: Cross multiply
    263,753.40x = 395,584.20 × 74,168.75
  4. Step 4: Simplify right side
    263,753.40x = 29,339,983,655.83
  5. Step 5: Solve for x
    x = 29,339,983,655.83/263,753.40
  6. Step 6: Final answer
    x = 111,240.21

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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.