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Finding the Fourth Proportional to 279,883.56, 419,850.51 and 90,348.42

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Solution

The fourth proportional to 279,883.56, 419,850.51 and 90,348.42 is: 135,530.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,883.56 : 419,850.51 = 90,348.42 : x
  2. Step 2: Convert to fraction form
    279,883.56/419,850.51 = 90,348.42/x
  3. Step 3: Cross multiply
    279,883.56x = 419,850.51 × 90,348.42
  4. Step 4: Simplify right side
    279,883.56x = 37,932,830,214.69
  5. Step 5: Solve for x
    x = 37,932,830,214.69/279,883.56
  6. Step 6: Final answer
    x = 135,530.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.