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Finding the Third Proportional to 212,768 and 323,760

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Solution

The third proportional to 212,768 and 323,760 is: 492,651.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,768 : 323,760 = 323,760 : x
  2. Step 2: Convert to fraction form
    212,768/323,760 = 323,760/x
  3. Step 3: Cross multiply
    212,768x = 323,760 × 323,760
  4. Step 4: Simplify right side
    212,768x = 104,820,537,600
  5. Step 5: Solve for x
    x = 104,820,537,600/212,768
  6. Step 6: Final answer
    x = 492,651.80

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.