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Finding the Fourth Proportional to 339,114.90, 508,672.35 and 206,255.70

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Solution

The fourth proportional to 339,114.90, 508,672.35 and 206,255.70 is: 309,383.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,114.90 : 508,672.35 = 206,255.70 : x
  2. Step 2: Convert to fraction form
    339,114.90/508,672.35 = 206,255.70/x
  3. Step 3: Cross multiply
    339,114.90x = 508,672.35 × 206,255.70
  4. Step 4: Simplify right side
    339,114.90x = 104,916,571,619.90
  5. Step 5: Solve for x
    x = 104,916,571,619.90/339,114.90
  6. Step 6: Final answer
    x = 309,383.55

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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.