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Finding the Fourth Proportional to 381,189.72, 571,062.85 and 254,447.80

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Solution

The fourth proportional to 381,189.72, 571,062.85 and 254,447.80 is: 381,189.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,189.72 : 571,062.85 = 254,447.80 : x
  2. Step 2: Convert to fraction form
    381,189.72/571,062.85 = 254,447.80/x
  3. Step 3: Cross multiply
    381,189.72x = 571,062.85 × 254,447.80
  4. Step 4: Simplify right side
    381,189.72x = 145,305,685,844.23
  5. Step 5: Solve for x
    x = 145,305,685,844.23/381,189.72
  6. Step 6: Final answer
    x = 381,189.94

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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.