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Finding the Third Proportional to 209,163 and 314,221

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Solution

The third proportional to 209,163 and 314,221 is: 472,047.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,163 : 314,221 = 314,221 : x
  2. Step 2: Convert to fraction form
    209,163/314,221 = 314,221/x
  3. Step 3: Cross multiply
    209,163x = 314,221 × 314,221
  4. Step 4: Simplify right side
    209,163x = 98,734,836,841
  5. Step 5: Solve for x
    x = 98,734,836,841/209,163
  6. Step 6: Final answer
    x = 472,047.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.