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Finding the Third Proportional to 115,389 and 248,031

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Solution

The third proportional to 115,389 and 248,031 is: 533,147.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,389 : 248,031 = 248,031 : x
  2. Step 2: Convert to fraction form
    115,389/248,031 = 248,031/x
  3. Step 3: Cross multiply
    115,389x = 248,031 × 248,031
  4. Step 4: Simplify right side
    115,389x = 61,519,376,961
  5. Step 5: Solve for x
    x = 61,519,376,961/115,389
  6. Step 6: Final answer
    x = 533,147.67

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.