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Finding the Third Proportional to 200,819 and 436,639

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Solution

The third proportional to 200,819 and 436,639 is: 949,380.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,819 : 436,639 = 436,639 : x
  2. Step 2: Convert to fraction form
    200,819/436,639 = 436,639/x
  3. Step 3: Cross multiply
    200,819x = 436,639 × 436,639
  4. Step 4: Simplify right side
    200,819x = 190,653,616,321
  5. Step 5: Solve for x
    x = 190,653,616,321/200,819
  6. Step 6: Final answer
    x = 949,380.37

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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.