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Finding the Third Proportional to 209,780 and 314,606

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Solution

The third proportional to 209,780 and 314,606 is: 471,813.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,780 : 314,606 = 314,606 : x
  2. Step 2: Convert to fraction form
    209,780/314,606 = 314,606/x
  3. Step 3: Cross multiply
    209,780x = 314,606 × 314,606
  4. Step 4: Simplify right side
    209,780x = 98,976,935,236
  5. Step 5: Solve for x
    x = 98,976,935,236/209,780
  6. Step 6: Final answer
    x = 471,813.02

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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.