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Finding the Fourth Proportional to 279,446.36, 419,040.54 and 89,871.53

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Solution

The fourth proportional to 279,446.36, 419,040.54 and 89,871.53 is: 134,765.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,446.36 : 419,040.54 = 89,871.53 : x
  2. Step 2: Convert to fraction form
    279,446.36/419,040.54 = 89,871.53/x
  3. Step 3: Cross multiply
    279,446.36x = 419,040.54 × 89,871.53
  4. Step 4: Simplify right side
    279,446.36x = 37,659,812,366.62
  5. Step 5: Solve for x
    x = 37,659,812,366.62/279,446.36
  6. Step 6: Final answer
    x = 134,765.80

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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.