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Finding the Fourth Proportional to 225,418.32, 311,073.48 and 124,814.16

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Solution

The fourth proportional to 225,418.32, 311,073.48 and 124,814.16 is: 172,241.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,418.32 : 311,073.48 = 124,814.16 : x
  2. Step 2: Convert to fraction form
    225,418.32/311,073.48 = 124,814.16/x
  3. Step 3: Cross multiply
    225,418.32x = 311,073.48 × 124,814.16
  4. Step 4: Simplify right side
    225,418.32x = 38,826,375,104.48
  5. Step 5: Solve for x
    x = 38,826,375,104.48/225,418.32
  6. Step 6: Final answer
    x = 172,241.44

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1.5x scale

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.