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Finding the Third Proportional to 207,991.50 and 320,797.50

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Solution

The third proportional to 207,991.50 and 320,797.50 is: 494,784.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,991.50 : 320,797.50 = 320,797.50 : x
  2. Step 2: Convert to fraction form
    207,991.50/320,797.50 = 320,797.50/x
  3. Step 3: Cross multiply
    207,991.50x = 320,797.50 × 320,797.50
  4. Step 4: Simplify right side
    207,991.50x = 102,911,036,006.25
  5. Step 5: Solve for x
    x = 102,911,036,006.25/207,991.50
  6. Step 6: Final answer
    x = 494,784.82

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.