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Finding the Third Proportional to 211,785.75 and 412,929

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Solution

The third proportional to 211,785.75 and 412,929 is: 805,107.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,785.75 : 412,929 = 412,929 : x
  2. Step 2: Convert to fraction form
    211,785.75/412,929 = 412,929/x
  3. Step 3: Cross multiply
    211,785.75x = 412,929 × 412,929
  4. Step 4: Simplify right side
    211,785.75x = 170,510,359,041
  5. Step 5: Solve for x
    x = 170,510,359,041/211,785.75
  6. Step 6: Final answer
    x = 805,107.80

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.