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Finding the Fourth Proportional to 279,793.76, 419,772.36 and 90,249.93

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Solution

The fourth proportional to 279,793.76, 419,772.36 and 90,249.93 is: 135,401.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,793.76 : 419,772.36 = 90,249.93 : x
  2. Step 2: Convert to fraction form
    279,793.76/419,772.36 = 90,249.93/x
  3. Step 3: Cross multiply
    279,793.76x = 419,772.36 × 90,249.93
  4. Step 4: Simplify right side
    279,793.76x = 37,884,424,007.07
  5. Step 5: Solve for x
    x = 37,884,424,007.07/279,793.76
  6. Step 6: Final answer
    x = 135,401.25

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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.