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Finding the Third Proportional to 181,139 and 397,270

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Solution

The third proportional to 181,139 and 397,270 is: 871,283.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,139 : 397,270 = 397,270 : x
  2. Step 2: Convert to fraction form
    181,139/397,270 = 397,270/x
  3. Step 3: Cross multiply
    181,139x = 397,270 × 397,270
  4. Step 4: Simplify right side
    181,139x = 157,823,452,900
  5. Step 5: Solve for x
    x = 157,823,452,900/181,139
  6. Step 6: Final answer
    x = 871,283.67

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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.