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Finding the Fourth Proportional to 339,390.36, 508,876.29 and 114,729.57

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Solution

The fourth proportional to 339,390.36, 508,876.29 and 114,729.57 is: 172,023.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,390.36 : 508,876.29 = 114,729.57 : x
  2. Step 2: Convert to fraction form
    339,390.36/508,876.29 = 114,729.57/x
  3. Step 3: Cross multiply
    339,390.36x = 508,876.29 × 114,729.57
  4. Step 4: Simplify right side
    339,390.36x = 58,383,157,934.90
  5. Step 5: Solve for x
    x = 58,383,157,934.90/339,390.36
  6. Step 6: Final answer
    x = 172,023.62

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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.