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Finding the Third Proportional to 155,623.50 and 339,921

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Solution

The third proportional to 155,623.50 and 339,921 is: 742,473.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,623.50 : 339,921 = 339,921 : x
  2. Step 2: Convert to fraction form
    155,623.50/339,921 = 339,921/x
  3. Step 3: Cross multiply
    155,623.50x = 339,921 × 339,921
  4. Step 4: Simplify right side
    155,623.50x = 115,546,286,241
  5. Step 5: Solve for x
    x = 115,546,286,241/155,623.50
  6. Step 6: Final answer
    x = 742,473.25

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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.