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Finding the Fourth Proportional to 381,255.15, 571,886.83 and 115,017.97

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Solution

The fourth proportional to 381,255.15, 571,886.83 and 115,017.97 is: 172,528.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,255.15 : 571,886.83 = 115,017.97 : x
  2. Step 2: Convert to fraction form
    381,255.15/571,886.83 = 115,017.97/x
  3. Step 3: Cross multiply
    381,255.15x = 571,886.83 × 115,017.97
  4. Step 4: Simplify right side
    381,255.15x = 65,777,262,256.34
  5. Step 5: Solve for x
    x = 65,777,262,256.34/381,255.15
  6. Step 6: Final answer
    x = 172,528.19

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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.