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Finding the Third Proportional to 205,202 and 315,201

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Solution

The third proportional to 205,202 and 315,201 is: 484,165.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,202 : 315,201 = 315,201 : x
  2. Step 2: Convert to fraction form
    205,202/315,201 = 315,201/x
  3. Step 3: Cross multiply
    205,202x = 315,201 × 315,201
  4. Step 4: Simplify right side
    205,202x = 99,351,670,401
  5. Step 5: Solve for x
    x = 99,351,670,401/205,202
  6. Step 6: Final answer
    x = 484,165.21

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.