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Finding the Third Proportional to 131,430 and 203,886

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Solution

The third proportional to 131,430 and 203,886 is: 316,286.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,430 : 203,886 = 203,886 : x
  2. Step 2: Convert to fraction form
    131,430/203,886 = 203,886/x
  3. Step 3: Cross multiply
    131,430x = 203,886 × 203,886
  4. Step 4: Simplify right side
    131,430x = 41,569,500,996
  5. Step 5: Solve for x
    x = 41,569,500,996/131,430
  6. Step 6: Final answer
    x = 316,286.24

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.