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Finding the Fourth Proportional to 225,421.43, 311,081.58 and 124,819.43

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Solution

The fourth proportional to 225,421.43, 311,081.58 and 124,819.43 is: 172,250.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,421.43 : 311,081.58 = 124,819.43 : x
  2. Step 2: Convert to fraction form
    225,421.43/311,081.58 = 124,819.43/x
  3. Step 3: Cross multiply
    225,421.43x = 311,081.58 × 124,819.43
  4. Step 4: Simplify right side
    225,421.43x = 38,829,025,499.10
  5. Step 5: Solve for x
    x = 38,829,025,499.10/225,421.43
  6. Step 6: Final answer
    x = 172,250.82

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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.