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Finding the Third Proportional to 138,303 and 208,725.75

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Solution

The third proportional to 138,303 and 208,725.75 is: 315,007.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,303 : 208,725.75 = 208,725.75 : x
  2. Step 2: Convert to fraction form
    138,303/208,725.75 = 208,725.75/x
  3. Step 3: Cross multiply
    138,303x = 208,725.75 × 208,725.75
  4. Step 4: Simplify right side
    138,303x = 43,566,438,713.06
  5. Step 5: Solve for x
    x = 43,566,438,713.06/138,303
  6. Step 6: Final answer
    x = 315,007.19

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.