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Finding the Third Proportional to 155,497.50 and 320,809.50

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Solution

The third proportional to 155,497.50 and 320,809.50 is: 661,867.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,497.50 : 320,809.50 = 320,809.50 : x
  2. Step 2: Convert to fraction form
    155,497.50/320,809.50 = 320,809.50/x
  3. Step 3: Cross multiply
    155,497.50x = 320,809.50 × 320,809.50
  4. Step 4: Simplify right side
    155,497.50x = 102,918,735,290.25
  5. Step 5: Solve for x
    x = 102,918,735,290.25/155,497.50
  6. Step 6: Final answer
    x = 661,867.46

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.