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Finding the Third Proportional to 290,588 and 440,228

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Solution

The third proportional to 290,588 and 440,228 is: 666,926.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,588 : 440,228 = 440,228 : x
  2. Step 2: Convert to fraction form
    290,588/440,228 = 440,228/x
  3. Step 3: Cross multiply
    290,588x = 440,228 × 440,228
  4. Step 4: Simplify right side
    290,588x = 193,800,691,984
  5. Step 5: Solve for x
    x = 193,800,691,984/290,588
  6. Step 6: Final answer
    x = 666,926.00

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.