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Finding the Fourth Proportional to 275,679.96, 413,577.31 and 86,132.67

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Solution

The fourth proportional to 275,679.96, 413,577.31 and 86,132.67 is: 129,216.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,679.96 : 413,577.31 = 86,132.67 : x
  2. Step 2: Convert to fraction form
    275,679.96/413,577.31 = 86,132.67/x
  3. Step 3: Cross multiply
    275,679.96x = 413,577.31 × 86,132.67
  4. Step 4: Simplify right side
    275,679.96x = 35,622,517,961.72
  5. Step 5: Solve for x
    x = 35,622,517,961.72/275,679.96
  6. Step 6: Final answer
    x = 129,216.93

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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.