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Finding the Fourth Proportional to 381,255.69, 571,887.64 and 115,018.51

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Solution

The fourth proportional to 381,255.69, 571,887.64 and 115,018.51 is: 172,529.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,255.69 : 571,887.64 = 115,018.51 : x
  2. Step 2: Convert to fraction form
    381,255.69/571,887.64 = 115,018.51/x
  3. Step 3: Cross multiply
    381,255.69x = 571,887.64 × 115,018.51
  4. Step 4: Simplify right side
    381,255.69x = 65,777,665,098.85
  5. Step 5: Solve for x
    x = 65,777,665,098.85/381,255.69
  6. Step 6: Final answer
    x = 172,529.01

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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.