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Finding the Third Proportional to 211,425.75 and 317,238.75

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Solution

The third proportional to 211,425.75 and 317,238.75 is: 476,008.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,425.75 : 317,238.75 = 317,238.75 : x
  2. Step 2: Convert to fraction form
    211,425.75/317,238.75 = 317,238.75/x
  3. Step 3: Cross multiply
    211,425.75x = 317,238.75 × 317,238.75
  4. Step 4: Simplify right side
    211,425.75x = 100,640,424,501.56
  5. Step 5: Solve for x
    x = 100,640,424,501.56/211,425.75
  6. Step 6: Final answer
    x = 476,008.36

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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.