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Finding the Fourth Proportional to 225,375.73, 311,008.89 and 123,399.34

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Solution

The fourth proportional to 225,375.73, 311,008.89 and 123,399.34 is: 170,285.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,375.73 : 311,008.89 = 123,399.34 : x
  2. Step 2: Convert to fraction form
    225,375.73/311,008.89 = 123,399.34/x
  3. Step 3: Cross multiply
    225,375.73x = 311,008.89 × 123,399.34
  4. Step 4: Simplify right side
    225,375.73x = 38,378,291,760.13
  5. Step 5: Solve for x
    x = 38,378,291,760.13/225,375.73
  6. Step 6: Final answer
    x = 170,285.82

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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.