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Finding the Third Proportional to 201,932 and 312,630

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Solution

The third proportional to 201,932 and 312,630 is: 484,012.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,932 : 312,630 = 312,630 : x
  2. Step 2: Convert to fraction form
    201,932/312,630 = 312,630/x
  3. Step 3: Cross multiply
    201,932x = 312,630 × 312,630
  4. Step 4: Simplify right side
    201,932x = 97,737,516,900
  5. Step 5: Solve for x
    x = 97,737,516,900/201,932
  6. Step 6: Final answer
    x = 484,012.03

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.