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Finding the Third Proportional to 140,221.13 and 305,820.56

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Solution

The third proportional to 140,221.13 and 305,820.56 is: 666,990.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,221.13 : 305,820.56 = 305,820.56 : x
  2. Step 2: Convert to fraction form
    140,221.13/305,820.56 = 305,820.56/x
  3. Step 3: Cross multiply
    140,221.13x = 305,820.56 × 305,820.56
  4. Step 4: Simplify right side
    140,221.13x = 93,526,216,447.82
  5. Step 5: Solve for x
    x = 93,526,216,447.82/140,221.13
  6. Step 6: Final answer
    x = 666,990.91

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.