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Finding the Fourth Proportional to 325,679.76, 449,185.32 and 218,215.44

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Solution

The fourth proportional to 325,679.76, 449,185.32 and 218,215.44 is: 300,967.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,679.76 : 449,185.32 = 218,215.44 : x
  2. Step 2: Convert to fraction form
    325,679.76/449,185.32 = 218,215.44/x
  3. Step 3: Cross multiply
    325,679.76x = 449,185.32 × 218,215.44
  4. Step 4: Simplify right side
    325,679.76x = 98,019,172,245.34
  5. Step 5: Solve for x
    x = 98,019,172,245.34/325,679.76
  6. Step 6: Final answer
    x = 300,967.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.