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Finding the Third Proportional to 129,996 and 279,340

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Solution

The third proportional to 129,996 and 279,340 is: 600,255.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,996 : 279,340 = 279,340 : x
  2. Step 2: Convert to fraction form
    129,996/279,340 = 279,340/x
  3. Step 3: Cross multiply
    129,996x = 279,340 × 279,340
  4. Step 4: Simplify right side
    129,996x = 78,030,835,600
  5. Step 5: Solve for x
    x = 78,030,835,600/129,996
  6. Step 6: Final answer
    x = 600,255.67

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.