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Finding the Fourth Proportional to 225,375.92, 311,018.24 and 129,881.76

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Solution

The fourth proportional to 225,375.92, 311,018.24 and 129,881.76 is: 179,236.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,375.92 : 311,018.24 = 129,881.76 : x
  2. Step 2: Convert to fraction form
    225,375.92/311,018.24 = 129,881.76/x
  3. Step 3: Cross multiply
    225,375.92x = 311,018.24 × 129,881.76
  4. Step 4: Simplify right side
    225,375.92x = 40,395,596,403.30
  5. Step 5: Solve for x
    x = 40,395,596,403.30/225,375.92
  6. Step 6: Final answer
    x = 179,236.52

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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.