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Finding the Third Proportional to 274,258 and 414,311

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Solution

The third proportional to 274,258 and 414,311 is: 625,883.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,258 : 414,311 = 414,311 : x
  2. Step 2: Convert to fraction form
    274,258/414,311 = 414,311/x
  3. Step 3: Cross multiply
    274,258x = 414,311 × 414,311
  4. Step 4: Simplify right side
    274,258x = 171,653,604,721
  5. Step 5: Solve for x
    x = 171,653,604,721/274,258
  6. Step 6: Final answer
    x = 625,883.67

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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.