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Finding the Fourth Proportional to 225,921.43, 311,771.43 and 123,947.54

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Solution

The fourth proportional to 225,921.43, 311,771.43 and 123,947.54 is: 171,047.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,921.43 : 311,771.43 = 123,947.54 : x
  2. Step 2: Convert to fraction form
    225,921.43/311,771.43 = 123,947.54/x
  3. Step 3: Cross multiply
    225,921.43x = 311,771.43 × 123,947.54
  4. Step 4: Simplify right side
    225,921.43x = 38,643,302,277.93
  5. Step 5: Solve for x
    x = 38,643,302,277.93/225,921.43
  6. Step 6: Final answer
    x = 171,047.53

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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.