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Finding the Fourth Proportional to 407,073.72, 561,796.20 and 225,843.96

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Solution

The fourth proportional to 407,073.72, 561,796.20 and 225,843.96 is: 311,683.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,073.72 : 561,796.20 = 225,843.96 : x
  2. Step 2: Convert to fraction form
    407,073.72/561,796.20 = 225,843.96/x
  3. Step 3: Cross multiply
    407,073.72x = 561,796.20 × 225,843.96
  4. Step 4: Simplify right side
    407,073.72x = 126,878,278,520.95
  5. Step 5: Solve for x
    x = 126,878,278,520.95/407,073.72
  6. Step 6: Final answer
    x = 311,683.79

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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.