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Finding the Third Proportional to 130,940 and 285,214

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Solution

The third proportional to 130,940 and 285,214 is: 621,254.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,940 : 285,214 = 285,214 : x
  2. Step 2: Convert to fraction form
    130,940/285,214 = 285,214/x
  3. Step 3: Cross multiply
    130,940x = 285,214 × 285,214
  4. Step 4: Simplify right side
    130,940x = 81,347,025,796
  5. Step 5: Solve for x
    x = 81,347,025,796/130,940
  6. Step 6: Final answer
    x = 621,254.21

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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.