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Finding the Third Proportional to 131,290 and 286,344

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Solution

The third proportional to 131,290 and 286,344 is: 624,517.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,290 : 286,344 = 286,344 : x
  2. Step 2: Convert to fraction form
    131,290/286,344 = 286,344/x
  3. Step 3: Cross multiply
    131,290x = 286,344 × 286,344
  4. Step 4: Simplify right side
    131,290x = 81,992,886,336
  5. Step 5: Solve for x
    x = 81,992,886,336/131,290
  6. Step 6: Final answer
    x = 624,517.38

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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.