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Finding the Third Proportional to 211,110 and 315,612

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Solution

The third proportional to 211,110 and 315,612 is: 471,843.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,110 : 315,612 = 315,612 : x
  2. Step 2: Convert to fraction form
    211,110/315,612 = 315,612/x
  3. Step 3: Cross multiply
    211,110x = 315,612 × 315,612
  4. Step 4: Simplify right side
    211,110x = 99,610,934,544
  5. Step 5: Solve for x
    x = 99,610,934,544/211,110
  6. Step 6: Final answer
    x = 471,843.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.