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Finding the Fourth Proportional to 451,261.70, 622,739.85 and 250,057.70

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Solution

The fourth proportional to 451,261.70, 622,739.85 and 250,057.70 is: 345,078.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,261.70 : 622,739.85 = 250,057.70 : x
  2. Step 2: Convert to fraction form
    451,261.70/622,739.85 = 250,057.70/x
  3. Step 3: Cross multiply
    451,261.70x = 622,739.85 × 250,057.70
  4. Step 4: Simplify right side
    451,261.70x = 155,720,894,589.35
  5. Step 5: Solve for x
    x = 155,720,894,589.35/451,261.70
  6. Step 6: Final answer
    x = 345,078.91

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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.