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Finding the Third Proportional to 144,558 and 320,085

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Solution

The third proportional to 144,558 and 320,085 is: 708,742.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,558 : 320,085 = 320,085 : x
  2. Step 2: Convert to fraction form
    144,558/320,085 = 320,085/x
  3. Step 3: Cross multiply
    144,558x = 320,085 × 320,085
  4. Step 4: Simplify right side
    144,558x = 102,454,407,225
  5. Step 5: Solve for x
    x = 102,454,407,225/144,558
  6. Step 6: Final answer
    x = 708,742.56

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.