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Finding the Fourth Proportional to 225,972.80, 338,894.40 and 68,163.20

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Solution

The fourth proportional to 225,972.80, 338,894.40 and 68,163.20 is: 102,225.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,972.80 : 338,894.40 = 68,163.20 : x
  2. Step 2: Convert to fraction form
    225,972.80/338,894.40 = 68,163.20/x
  3. Step 3: Cross multiply
    225,972.80x = 338,894.40 × 68,163.20
  4. Step 4: Simplify right side
    225,972.80x = 23,100,126,766.08
  5. Step 5: Solve for x
    x = 23,100,126,766.08/225,972.80
  6. Step 6: Final answer
    x = 102,225.25

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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.