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Finding the Fourth Proportional to 279,207.44, 385,245.42 and 158,321.48

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Solution

The fourth proportional to 279,207.44, 385,245.42 and 158,321.48 is: 218,449.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,207.44 : 385,245.42 = 158,321.48 : x
  2. Step 2: Convert to fraction form
    279,207.44/385,245.42 = 158,321.48/x
  3. Step 3: Cross multiply
    279,207.44x = 385,245.42 × 158,321.48
  4. Step 4: Simplify right side
    279,207.44x = 60,992,625,057.62
  5. Step 5: Solve for x
    x = 60,992,625,057.62/279,207.44
  6. Step 6: Final answer
    x = 218,449.14

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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.