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Finding the Fourth Proportional to 279,881.59, 419,882.02 and 90,352.73

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Solution

The fourth proportional to 279,881.59, 419,882.02 and 90,352.73 is: 135,548.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,881.59 : 419,882.02 = 90,352.73 : x
  2. Step 2: Convert to fraction form
    279,881.59/419,882.02 = 90,352.73/x
  3. Step 3: Cross multiply
    279,881.59x = 419,882.02 × 90,352.73
  4. Step 4: Simplify right side
    279,881.59x = 37,937,486,542.41
  5. Step 5: Solve for x
    x = 37,937,486,542.41/279,881.59
  6. Step 6: Final answer
    x = 135,548.35

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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.