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Finding the Fourth Proportional to 225,945.60, 311,805.36 and 125,343.60

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Solution

The fourth proportional to 225,945.60, 311,805.36 and 125,343.60 is: 172,974.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,945.60 : 311,805.36 = 125,343.60 : x
  2. Step 2: Convert to fraction form
    225,945.60/311,805.36 = 125,343.60/x
  3. Step 3: Cross multiply
    225,945.60x = 311,805.36 × 125,343.60
  4. Step 4: Simplify right side
    225,945.60x = 39,082,806,321.70
  5. Step 5: Solve for x
    x = 39,082,806,321.70/225,945.60
  6. Step 6: Final answer
    x = 172,974.41

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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.