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Finding the Third Proportional to 239,921 and 509,362

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Solution

The third proportional to 239,921 and 509,362 is: 1,081,396.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,921 : 509,362 = 509,362 : x
  2. Step 2: Convert to fraction form
    239,921/509,362 = 509,362/x
  3. Step 3: Cross multiply
    239,921x = 509,362 × 509,362
  4. Step 4: Simplify right side
    239,921x = 259,449,647,044
  5. Step 5: Solve for x
    x = 259,449,647,044/239,921
  6. Step 6: Final answer
    x = 1,081,396.16

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.