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Finding the Third Proportional to 197,768 and 409,556

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Solution

The third proportional to 197,768 and 409,556 is: 848,145.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,768 : 409,556 = 409,556 : x
  2. Step 2: Convert to fraction form
    197,768/409,556 = 409,556/x
  3. Step 3: Cross multiply
    197,768x = 409,556 × 409,556
  4. Step 4: Simplify right side
    197,768x = 167,736,117,136
  5. Step 5: Solve for x
    x = 167,736,117,136/197,768
  6. Step 6: Final answer
    x = 848,145.89

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.