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Finding the Fourth Proportional to 225,454.48, 311,131.86 and 123,484.22

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Solution

The fourth proportional to 225,454.48, 311,131.86 and 123,484.22 is: 170,410.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,454.48 : 311,131.86 = 123,484.22 : x
  2. Step 2: Convert to fraction form
    225,454.48/311,131.86 = 123,484.22/x
  3. Step 3: Cross multiply
    225,454.48x = 311,131.86 × 123,484.22
  4. Step 4: Simplify right side
    225,454.48x = 38,419,875,049.25
  5. Step 5: Solve for x
    x = 38,419,875,049.25/225,454.48
  6. Step 6: Final answer
    x = 170,410.79

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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.