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Finding the Fourth Proportional to 381,253.39, 571,884.21 and 115,016.22

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Solution

The fourth proportional to 381,253.39, 571,884.21 and 115,016.22 is: 172,525.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,253.39 : 571,884.21 = 115,016.22 : x
  2. Step 2: Convert to fraction form
    381,253.39/571,884.21 = 115,016.22/x
  3. Step 3: Cross multiply
    381,253.39x = 571,884.21 × 115,016.22
  4. Step 4: Simplify right side
    381,253.39x = 65,775,960,111.89
  5. Step 5: Solve for x
    x = 65,775,960,111.89/381,253.39
  6. Step 6: Final answer
    x = 172,525.58

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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.