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Finding the Fourth Proportional to 225,351.90, 310,989.30 and 123,375.66

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Solution

The fourth proportional to 225,351.90, 310,989.30 and 123,375.66 is: 170,260.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,351.90 : 310,989.30 = 123,375.66 : x
  2. Step 2: Convert to fraction form
    225,351.90/310,989.30 = 123,375.66/x
  3. Step 3: Cross multiply
    225,351.90x = 310,989.30 × 123,375.66
  4. Step 4: Simplify right side
    225,351.90x = 38,368,510,140.44
  5. Step 5: Solve for x
    x = 38,368,510,140.44/225,351.90
  6. Step 6: Final answer
    x = 170,260.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.