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Finding the Fourth Proportional to 381,003.80, 571,505.70 and 344,262.20

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Solution

The fourth proportional to 381,003.80, 571,505.70 and 344,262.20 is: 516,393.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,003.80 : 571,505.70 = 344,262.20 : x
  2. Step 2: Convert to fraction form
    381,003.80/571,505.70 = 344,262.20/x
  3. Step 3: Cross multiply
    381,003.80x = 571,505.70 × 344,262.20
  4. Step 4: Simplify right side
    381,003.80x = 196,747,809,594.54
  5. Step 5: Solve for x
    x = 196,747,809,594.54/381,003.80
  6. Step 6: Final answer
    x = 516,393.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.