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Finding the Third Proportional to 239,815 and 351,946

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Solution

The third proportional to 239,815 and 351,946 is: 516,506.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,815 : 351,946 = 351,946 : x
  2. Step 2: Convert to fraction form
    239,815/351,946 = 351,946/x
  3. Step 3: Cross multiply
    239,815x = 351,946 × 351,946
  4. Step 4: Simplify right side
    239,815x = 123,865,986,916
  5. Step 5: Solve for x
    x = 123,865,986,916/239,815
  6. Step 6: Final answer
    x = 516,506.42

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.