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Finding the Third Proportional to 187,980 and 407,124

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Solution

The third proportional to 187,980 and 407,124 is: 881,742.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,980 : 407,124 = 407,124 : x
  2. Step 2: Convert to fraction form
    187,980/407,124 = 407,124/x
  3. Step 3: Cross multiply
    187,980x = 407,124 × 407,124
  4. Step 4: Simplify right side
    187,980x = 165,749,951,376
  5. Step 5: Solve for x
    x = 165,749,951,376/187,980
  6. Step 6: Final answer
    x = 881,742.48

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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.