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Finding the Third Proportional to 321,273 and 451,289.25

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Solution

The third proportional to 321,273 and 451,289.25 is: 633,921.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,273 : 451,289.25 = 451,289.25 : x
  2. Step 2: Convert to fraction form
    321,273/451,289.25 = 451,289.25/x
  3. Step 3: Cross multiply
    321,273x = 451,289.25 × 451,289.25
  4. Step 4: Simplify right side
    321,273x = 203,661,987,165.56
  5. Step 5: Solve for x
    x = 203,661,987,165.56/321,273
  6. Step 6: Final answer
    x = 633,921.89

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.