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Finding the Fourth Proportional to 276,256.86, 414,344.28 and 76,556.42

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Solution

The fourth proportional to 276,256.86, 414,344.28 and 76,556.42 is: 114,823.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,256.86 : 414,344.28 = 76,556.42 : x
  2. Step 2: Convert to fraction form
    276,256.86/414,344.28 = 76,556.42/x
  3. Step 3: Cross multiply
    276,256.86x = 414,344.28 × 76,556.42
  4. Step 4: Simplify right side
    276,256.86x = 31,720,715,760.14
  5. Step 5: Solve for x
    x = 31,720,715,760.14/276,256.86
  6. Step 6: Final answer
    x = 114,823.27

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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.