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Finding the Fourth Proportional to 263,445.20, 395,167.80 and 73,905.20

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Solution

The fourth proportional to 263,445.20, 395,167.80 and 73,905.20 is: 110,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,445.20 : 395,167.80 = 73,905.20 : x
  2. Step 2: Convert to fraction form
    263,445.20/395,167.80 = 73,905.20/x
  3. Step 3: Cross multiply
    263,445.20x = 395,167.80 × 73,905.20
  4. Step 4: Simplify right side
    263,445.20x = 29,204,955,292.56
  5. Step 5: Solve for x
    x = 29,204,955,292.56/263,445.20
  6. Step 6: Final answer
    x = 110,857.80

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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.