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Finding the Fourth Proportional to 275,811.26, 413,708.66 and 76,143.83

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Solution

The fourth proportional to 275,811.26, 413,708.66 and 76,143.83 is: 114,213.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,811.26 : 413,708.66 = 76,143.83 : x
  2. Step 2: Convert to fraction form
    275,811.26/413,708.66 = 76,143.83/x
  3. Step 3: Cross multiply
    275,811.26x = 413,708.66 × 76,143.83
  4. Step 4: Simplify right side
    275,811.26x = 31,501,362,530.12
  5. Step 5: Solve for x
    x = 31,501,362,530.12/275,811.26
  6. Step 6: Final answer
    x = 114,213.47

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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.