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Finding the Fourth Proportional to 267,240.81, 400,912.80 and 87,277.86

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Solution

The fourth proportional to 267,240.81, 400,912.80 and 87,277.86 is: 130,933.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,240.81 : 400,912.80 = 87,277.86 : x
  2. Step 2: Convert to fraction form
    267,240.81/400,912.80 = 87,277.86/x
  3. Step 3: Cross multiply
    267,240.81x = 400,912.80 × 87,277.86
  4. Step 4: Simplify right side
    267,240.81x = 34,990,809,791.94
  5. Step 5: Solve for x
    x = 34,990,809,791.94/267,240.81
  6. Step 6: Final answer
    x = 130,933.63

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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.