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Finding the Third Proportional to 290,628 and 436,230

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Solution

The third proportional to 290,628 and 436,230 is: 654,777.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,628 : 436,230 = 436,230 : x
  2. Step 2: Convert to fraction form
    290,628/436,230 = 436,230/x
  3. Step 3: Cross multiply
    290,628x = 436,230 × 436,230
  4. Step 4: Simplify right side
    290,628x = 190,296,612,900
  5. Step 5: Solve for x
    x = 190,296,612,900/290,628
  6. Step 6: Final answer
    x = 654,777.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.