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Finding the Third Proportional to 211,929 and 317,896.50

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Solution

The third proportional to 211,929 and 317,896.50 is: 476,849.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,929 : 317,896.50 = 317,896.50 : x
  2. Step 2: Convert to fraction form
    211,929/317,896.50 = 317,896.50/x
  3. Step 3: Cross multiply
    211,929x = 317,896.50 × 317,896.50
  4. Step 4: Simplify right side
    211,929x = 101,058,184,712.25
  5. Step 5: Solve for x
    x = 101,058,184,712.25/211,929
  6. Step 6: Final answer
    x = 476,849.25

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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.