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Finding the Fourth Proportional to 339,371.87, 508,469.80 and 205,972.61

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Solution

The fourth proportional to 339,371.87, 508,469.80 and 205,972.61 is: 308,602.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,371.87 : 508,469.80 = 205,972.61 : x
  2. Step 2: Convert to fraction form
    339,371.87/508,469.80 = 205,972.61/x
  3. Step 3: Cross multiply
    339,371.87x = 508,469.80 × 205,972.61
  4. Step 4: Simplify right side
    339,371.87x = 104,730,851,812.18
  5. Step 5: Solve for x
    x = 104,730,851,812.18/339,371.87
  6. Step 6: Final answer
    x = 308,602.04

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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.