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Finding the Third Proportional to 309,910.50 and 651,192.75

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Solution

The third proportional to 309,910.50 and 651,192.75 is: 1,368,304.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,910.50 : 651,192.75 = 651,192.75 : x
  2. Step 2: Convert to fraction form
    309,910.50/651,192.75 = 651,192.75/x
  3. Step 3: Cross multiply
    309,910.50x = 651,192.75 × 651,192.75
  4. Step 4: Simplify right side
    309,910.50x = 424,051,997,652.56
  5. Step 5: Solve for x
    x = 424,051,997,652.56/309,910.50
  6. Step 6: Final answer
    x = 1,368,304.71

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.