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Finding the Fourth Proportional to 225,976.59, 311,993.78 and 140,026.78

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Solution

The fourth proportional to 225,976.59, 311,993.78 and 140,026.78 is: 193,327.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,976.59 : 311,993.78 = 140,026.78 : x
  2. Step 2: Convert to fraction form
    225,976.59/311,993.78 = 140,026.78/x
  3. Step 3: Cross multiply
    225,976.59x = 311,993.78 × 140,026.78
  4. Step 4: Simplify right side
    225,976.59x = 43,687,484,393.43
  5. Step 5: Solve for x
    x = 43,687,484,393.43/225,976.59
  6. Step 6: Final answer
    x = 193,327.48

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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.