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Finding the Third Proportional to 147,865.50 and 320,640.75

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Solution

The third proportional to 147,865.50 and 320,640.75 is: 695,297.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,865.50 : 320,640.75 = 320,640.75 : x
  2. Step 2: Convert to fraction form
    147,865.50/320,640.75 = 320,640.75/x
  3. Step 3: Cross multiply
    147,865.50x = 320,640.75 × 320,640.75
  4. Step 4: Simplify right side
    147,865.50x = 102,810,490,560.56
  5. Step 5: Solve for x
    x = 102,810,490,560.56/147,865.50
  6. Step 6: Final answer
    x = 695,297.35

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.