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Finding the Third Proportional to 266,922 and 555,990

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Solution

The third proportional to 266,922 and 555,990 is: 1,158,109.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,922 : 555,990 = 555,990 : x
  2. Step 2: Convert to fraction form
    266,922/555,990 = 555,990/x
  3. Step 3: Cross multiply
    266,922x = 555,990 × 555,990
  4. Step 4: Simplify right side
    266,922x = 309,124,880,100
  5. Step 5: Solve for x
    x = 309,124,880,100/266,922
  6. Step 6: Final answer
    x = 1,158,109.41

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.