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Finding the Third Proportional to 215,291.25 and 308,171.25

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Solution

The third proportional to 215,291.25 and 308,171.25 is: 441,121.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,291.25 : 308,171.25 = 308,171.25 : x
  2. Step 2: Convert to fraction form
    215,291.25/308,171.25 = 308,171.25/x
  3. Step 3: Cross multiply
    215,291.25x = 308,171.25 × 308,171.25
  4. Step 4: Simplify right side
    215,291.25x = 94,969,519,326.56
  5. Step 5: Solve for x
    x = 94,969,519,326.56/215,291.25
  6. Step 6: Final answer
    x = 441,121.13

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.