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Finding the Fourth Proportional to 225,992.60, 338,978.10 and 76,218.20

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Solution

The fourth proportional to 225,992.60, 338,978.10 and 76,218.20 is: 114,323.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,992.60 : 338,978.10 = 76,218.20 : x
  2. Step 2: Convert to fraction form
    225,992.60/338,978.10 = 76,218.20/x
  3. Step 3: Cross multiply
    225,992.60x = 338,978.10 × 76,218.20
  4. Step 4: Simplify right side
    225,992.60x = 25,836,300,621.42
  5. Step 5: Solve for x
    x = 25,836,300,621.42/225,992.60
  6. Step 6: Final answer
    x = 114,323.66

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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.