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Finding the Fourth Proportional to 225,521, 311,229.24 and 124,919

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Solution

The fourth proportional to 225,521, 311,229.24 and 124,919 is: 172,393.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,521 : 311,229.24 = 124,919 : x
  2. Step 2: Convert to fraction form
    225,521/311,229.24 = 124,919/x
  3. Step 3: Cross multiply
    225,521x = 311,229.24 × 124,919
  4. Step 4: Simplify right side
    225,521x = 38,878,445,431.56
  5. Step 5: Solve for x
    x = 38,878,445,431.56/225,521
  6. Step 6: Final answer
    x = 172,393.90

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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.