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Finding the Third Proportional to 197,221.50 and 320,422.50

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Solution

The third proportional to 197,221.50 and 320,422.50 is: 520,585.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,221.50 : 320,422.50 = 320,422.50 : x
  2. Step 2: Convert to fraction form
    197,221.50/320,422.50 = 320,422.50/x
  3. Step 3: Cross multiply
    197,221.50x = 320,422.50 × 320,422.50
  4. Step 4: Simplify right side
    197,221.50x = 102,670,578,506.25
  5. Step 5: Solve for x
    x = 102,670,578,506.25/197,221.50
  6. Step 6: Final answer
    x = 520,585.12

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Why These Related Problems?

These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.