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Finding the Fourth Proportional to 225,711.73, 338,678.42 and 90,770.35

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Solution

The fourth proportional to 225,711.73, 338,678.42 and 90,770.35 is: 136,200.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,711.73 : 338,678.42 = 90,770.35 : x
  2. Step 2: Convert to fraction form
    225,711.73/338,678.42 = 90,770.35/x
  3. Step 3: Cross multiply
    225,711.73x = 338,678.42 × 90,770.35
  4. Step 4: Simplify right side
    225,711.73x = 30,741,958,720.85
  5. Step 5: Solve for x
    x = 30,741,958,720.85/225,711.73
  6. Step 6: Final answer
    x = 136,200.09

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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.