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Finding the Third Proportional to 100,708.50 and 219,391.50

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Solution

The third proportional to 100,708.50 and 219,391.50 is: 477,940.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,708.50 : 219,391.50 = 219,391.50 : x
  2. Step 2: Convert to fraction form
    100,708.50/219,391.50 = 219,391.50/x
  3. Step 3: Cross multiply
    100,708.50x = 219,391.50 × 219,391.50
  4. Step 4: Simplify right side
    100,708.50x = 48,132,630,272.25
  5. Step 5: Solve for x
    x = 48,132,630,272.25/100,708.50
  6. Step 6: Final answer
    x = 477,940.10

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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.