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Finding the Fourth Proportional to 225,408.78, 338,237.69 and 125,625.21

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Solution

The fourth proportional to 225,408.78, 338,237.69 and 125,625.21 is: 188,507.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,408.78 : 338,237.69 = 125,625.21 : x
  2. Step 2: Convert to fraction form
    225,408.78/338,237.69 = 125,625.21/x
  3. Step 3: Cross multiply
    225,408.78x = 338,237.69 × 125,625.21
  4. Step 4: Simplify right side
    225,408.78x = 42,491,180,208.04
  5. Step 5: Solve for x
    x = 42,491,180,208.04/225,408.78
  6. Step 6: Final answer
    x = 188,507.21

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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.