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Finding the Fourth Proportional to 225,780.08, 311,575.56 and 125,178.08

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Solution

The fourth proportional to 225,780.08, 311,575.56 and 125,178.08 is: 172,745.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,780.08 : 311,575.56 = 125,178.08 : x
  2. Step 2: Convert to fraction form
    225,780.08/311,575.56 = 125,178.08/x
  3. Step 3: Cross multiply
    225,780.08x = 311,575.56 × 125,178.08
  4. Step 4: Simplify right side
    225,780.08x = 39,002,430,375.72
  5. Step 5: Solve for x
    x = 39,002,430,375.72/225,780.08
  6. Step 6: Final answer
    x = 172,745.22

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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.