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Finding the Fourth Proportional to 275,889.51, 413,610.84 and 86,252.31

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Solution

The fourth proportional to 275,889.51, 413,610.84 and 86,252.31 is: 129,308.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,889.51 : 413,610.84 = 86,252.31 : x
  2. Step 2: Convert to fraction form
    275,889.51/413,610.84 = 86,252.31/x
  3. Step 3: Cross multiply
    275,889.51x = 413,610.84 × 86,252.31
  4. Step 4: Simplify right side
    275,889.51x = 35,674,890,391.04
  5. Step 5: Solve for x
    x = 35,674,890,391.04/275,889.51
  6. Step 6: Final answer
    x = 129,308.61

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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.