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Finding the Third Proportional to 155,388 and 339,828

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Solution

The third proportional to 155,388 and 339,828 is: 743,191.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,388 : 339,828 = 339,828 : x
  2. Step 2: Convert to fraction form
    155,388/339,828 = 339,828/x
  3. Step 3: Cross multiply
    155,388x = 339,828 × 339,828
  4. Step 4: Simplify right side
    155,388x = 115,483,069,584
  5. Step 5: Solve for x
    x = 115,483,069,584/155,388
  6. Step 6: Final answer
    x = 743,191.69

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.