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Finding the Third Proportional to 155,557 and 339,273

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Solution

The third proportional to 155,557 and 339,273 is: 739,961.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,557 : 339,273 = 339,273 : x
  2. Step 2: Convert to fraction form
    155,557/339,273 = 339,273/x
  3. Step 3: Cross multiply
    155,557x = 339,273 × 339,273
  4. Step 4: Simplify right side
    155,557x = 115,106,168,529
  5. Step 5: Solve for x
    x = 115,106,168,529/155,557
  6. Step 6: Final answer
    x = 739,961.36

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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.