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Finding the Third Proportional to 200,556 and 427,800

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Solution

The third proportional to 200,556 and 427,800 is: 912,527.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,556 : 427,800 = 427,800 : x
  2. Step 2: Convert to fraction form
    200,556/427,800 = 427,800/x
  3. Step 3: Cross multiply
    200,556x = 427,800 × 427,800
  4. Step 4: Simplify right side
    200,556x = 183,012,840,000
  5. Step 5: Solve for x
    x = 183,012,840,000/200,556
  6. Step 6: Final answer
    x = 912,527.37

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.