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Finding the Third Proportional to 305,930 and 656,145

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Solution

The third proportional to 305,930 and 656,145 is: 1,407,270.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,930 : 656,145 = 656,145 : x
  2. Step 2: Convert to fraction form
    305,930/656,145 = 656,145/x
  3. Step 3: Cross multiply
    305,930x = 656,145 × 656,145
  4. Step 4: Simplify right side
    305,930x = 430,526,261,025
  5. Step 5: Solve for x
    x = 430,526,261,025/305,930
  6. Step 6: Final answer
    x = 1,407,270.49

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.