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Finding the Fourth Proportional to 339,206.43, 508,793.25 and 128,827.97

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Solution

The fourth proportional to 339,206.43, 508,793.25 and 128,827.97 is: 193,235.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,206.43 : 508,793.25 = 128,827.97 : x
  2. Step 2: Convert to fraction form
    339,206.43/508,793.25 = 128,827.97/x
  3. Step 3: Cross multiply
    339,206.43x = 508,793.25 × 128,827.97
  4. Step 4: Simplify right side
    339,206.43x = 65,546,800,669.66
  5. Step 5: Solve for x
    x = 65,546,800,669.66/339,206.43
  6. Step 6: Final answer
    x = 193,235.72

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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.