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Finding the Fourth Proportional to 381,252.78, 571,883.26 and 115,015.60

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Solution

The fourth proportional to 381,252.78, 571,883.26 and 115,015.60 is: 172,524.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,252.78 : 571,883.26 = 115,015.60 : x
  2. Step 2: Convert to fraction form
    381,252.78/571,883.26 = 115,015.60/x
  3. Step 3: Cross multiply
    381,252.78x = 571,883.26 × 115,015.60
  4. Step 4: Simplify right side
    381,252.78x = 65,775,496,278.86
  5. Step 5: Solve for x
    x = 65,775,496,278.86/381,252.78
  6. Step 6: Final answer
    x = 172,524.63

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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.