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Finding the Fourth Proportional to 279,161.56, 418,744.86 and 79,481.80

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Solution

The fourth proportional to 279,161.56, 418,744.86 and 79,481.80 is: 119,223.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,161.56 : 418,744.86 = 79,481.80 : x
  2. Step 2: Convert to fraction form
    279,161.56/418,744.86 = 79,481.80/x
  3. Step 3: Cross multiply
    279,161.56x = 418,744.86 × 79,481.80
  4. Step 4: Simplify right side
    279,161.56x = 33,282,595,213.55
  5. Step 5: Solve for x
    x = 33,282,595,213.55/279,161.56
  6. Step 6: Final answer
    x = 119,223.42

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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.