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Finding the Fourth Proportional to 225,936.80, 338,840.40 and 68,127.20

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Solution

The fourth proportional to 225,936.80, 338,840.40 and 68,127.20 is: 102,171.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,936.80 : 338,840.40 = 68,127.20 : x
  2. Step 2: Convert to fraction form
    225,936.80/338,840.40 = 68,127.20/x
  3. Step 3: Cross multiply
    225,936.80x = 338,840.40 × 68,127.20
  4. Step 4: Simplify right side
    225,936.80x = 23,084,247,698.88
  5. Step 5: Solve for x
    x = 23,084,247,698.88/225,936.80
  6. Step 6: Final answer
    x = 102,171.26

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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.