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Finding the Third Proportional to 270,881 and 420,012

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Solution

The third proportional to 270,881 and 420,012 is: 651,245.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,881 : 420,012 = 420,012 : x
  2. Step 2: Convert to fraction form
    270,881/420,012 = 420,012/x
  3. Step 3: Cross multiply
    270,881x = 420,012 × 420,012
  4. Step 4: Simplify right side
    270,881x = 176,410,080,144
  5. Step 5: Solve for x
    x = 176,410,080,144/270,881
  6. Step 6: Final answer
    x = 651,245.68

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.