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Finding the Fourth Proportional to 225,811.19, 338,717.38 and 76,156.61

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Solution

The fourth proportional to 225,811.19, 338,717.38 and 76,156.61 is: 114,235.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,811.19 : 338,717.38 = 76,156.61 : x
  2. Step 2: Convert to fraction form
    225,811.19/338,717.38 = 76,156.61/x
  3. Step 3: Cross multiply
    225,811.19x = 338,717.38 × 76,156.61
  4. Step 4: Simplify right side
    225,811.19x = 25,795,567,408.88
  5. Step 5: Solve for x
    x = 25,795,567,408.88/225,811.19
  6. Step 6: Final answer
    x = 114,235.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.