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Finding the Third Proportional to 255,619 and 553,556

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Solution

The third proportional to 255,619 and 553,556 is: 1,198,753.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,619 : 553,556 = 553,556 : x
  2. Step 2: Convert to fraction form
    255,619/553,556 = 553,556/x
  3. Step 3: Cross multiply
    255,619x = 553,556 × 553,556
  4. Step 4: Simplify right side
    255,619x = 306,424,245,136
  5. Step 5: Solve for x
    x = 306,424,245,136/255,619
  6. Step 6: Final answer
    x = 1,198,753.79

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.