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Finding the Third Proportional to 200,155 and 439,677

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Solution

The third proportional to 200,155 and 439,677 is: 965,830.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,155 : 439,677 = 439,677 : x
  2. Step 2: Convert to fraction form
    200,155/439,677 = 439,677/x
  3. Step 3: Cross multiply
    200,155x = 439,677 × 439,677
  4. Step 4: Simplify right side
    200,155x = 193,315,864,329
  5. Step 5: Solve for x
    x = 193,315,864,329/200,155
  6. Step 6: Final answer
    x = 965,830.80

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.