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Finding the Third Proportional to 199,205 and 431,620

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Solution

The third proportional to 199,205 and 431,620 is: 935,196.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,205 : 431,620 = 431,620 : x
  2. Step 2: Convert to fraction form
    199,205/431,620 = 431,620/x
  3. Step 3: Cross multiply
    199,205x = 431,620 × 431,620
  4. Step 4: Simplify right side
    199,205x = 186,295,824,400
  5. Step 5: Solve for x
    x = 186,295,824,400/199,205
  6. Step 6: Final answer
    x = 935,196.53

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.