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Finding the Third Proportional to 139,880.25 and 221,832

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Solution

The third proportional to 139,880.25 and 221,832 is: 351,796.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,880.25 : 221,832 = 221,832 : x
  2. Step 2: Convert to fraction form
    139,880.25/221,832 = 221,832/x
  3. Step 3: Cross multiply
    139,880.25x = 221,832 × 221,832
  4. Step 4: Simplify right side
    139,880.25x = 49,209,436,224
  5. Step 5: Solve for x
    x = 49,209,436,224/139,880.25
  6. Step 6: Final answer
    x = 351,796.89

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.