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Finding the Third Proportional to 139,904 and 218,224

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Solution

The third proportional to 139,904 and 218,224 is: 340,388.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,904 : 218,224 = 218,224 : x
  2. Step 2: Convert to fraction form
    139,904/218,224 = 218,224/x
  3. Step 3: Cross multiply
    139,904x = 218,224 × 218,224
  4. Step 4: Simplify right side
    139,904x = 47,621,714,176
  5. Step 5: Solve for x
    x = 47,621,714,176/139,904
  6. Step 6: Final answer
    x = 340,388.51

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.