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Finding the Fourth Proportional to 254,291.72, 381,289.26 and 76,745.48

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Solution

The fourth proportional to 254,291.72, 381,289.26 and 76,745.48 is: 115,073.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,291.72 : 381,289.26 = 76,745.48 : x
  2. Step 2: Convert to fraction form
    254,291.72/381,289.26 = 76,745.48/x
  3. Step 3: Cross multiply
    254,291.72x = 381,289.26 × 76,745.48
  4. Step 4: Simplify right side
    254,291.72x = 29,262,227,277.54
  5. Step 5: Solve for x
    x = 29,262,227,277.54/254,291.72
  6. Step 6: Final answer
    x = 115,073.46

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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.