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Finding the Third Proportional to 138,072 and 301,988

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Solution

The third proportional to 138,072 and 301,988 is: 660,501.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,072 : 301,988 = 301,988 : x
  2. Step 2: Convert to fraction form
    138,072/301,988 = 301,988/x
  3. Step 3: Cross multiply
    138,072x = 301,988 × 301,988
  4. Step 4: Simplify right side
    138,072x = 91,196,752,144
  5. Step 5: Solve for x
    x = 91,196,752,144/138,072
  6. Step 6: Final answer
    x = 660,501.42

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.