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Finding the Fourth Proportional to 279,035.64, 385,067.25 and 151,711.29

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Solution

The fourth proportional to 279,035.64, 385,067.25 and 151,711.29 is: 209,360.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,035.64 : 385,067.25 = 151,711.29 : x
  2. Step 2: Convert to fraction form
    279,035.64/385,067.25 = 151,711.29/x
  3. Step 3: Cross multiply
    279,035.64x = 385,067.25 × 151,711.29
  4. Step 4: Simplify right side
    279,035.64x = 58,419,049,234.25
  5. Step 5: Solve for x
    x = 58,419,049,234.25/279,035.64
  6. Step 6: Final answer
    x = 209,360.53

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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.