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Finding the Fourth Proportional to 225,418.82, 311,074.17 and 124,814.66

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Solution

The fourth proportional to 225,418.82, 311,074.17 and 124,814.66 is: 172,242.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,418.82 : 311,074.17 = 124,814.66 : x
  2. Step 2: Convert to fraction form
    225,418.82/311,074.17 = 124,814.66/x
  3. Step 3: Cross multiply
    225,418.82x = 311,074.17 × 124,814.66
  4. Step 4: Simplify right side
    225,418.82x = 38,826,616,763.33
  5. Step 5: Solve for x
    x = 38,826,616,763.33/225,418.82
  6. Step 6: Final answer
    x = 172,242.13

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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.