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Finding the Third Proportional to 155,619 and 339,507

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Solution

The third proportional to 155,619 and 339,507 is: 740,687.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,619 : 339,507 = 339,507 : x
  2. Step 2: Convert to fraction form
    155,619/339,507 = 339,507/x
  3. Step 3: Cross multiply
    155,619x = 339,507 × 339,507
  4. Step 4: Simplify right side
    155,619x = 115,265,003,049
  5. Step 5: Solve for x
    x = 115,265,003,049/155,619
  6. Step 6: Final answer
    x = 740,687.21

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.