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Finding the Fourth Proportional to 339,414.56, 508,961.28 and 126,035.36

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Solution

The fourth proportional to 339,414.56, 508,961.28 and 126,035.36 is: 188,993.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,414.56 : 508,961.28 = 126,035.36 : x
  2. Step 2: Convert to fraction form
    339,414.56/508,961.28 = 126,035.36/x
  3. Step 3: Cross multiply
    339,414.56x = 508,961.28 × 126,035.36
  4. Step 4: Simplify right side
    339,414.56x = 64,147,118,150.86
  5. Step 5: Solve for x
    x = 64,147,118,150.86/339,414.56
  6. Step 6: Final answer
    x = 188,993.42

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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.