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Finding the Fourth Proportional to 221,383.91, 332,321.70 and 114,739.31

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Solution

The fourth proportional to 221,383.91, 332,321.70 and 114,739.31 is: 172,236.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,383.91 : 332,321.70 = 114,739.31 : x
  2. Step 2: Convert to fraction form
    221,383.91/332,321.70 = 114,739.31/x
  3. Step 3: Cross multiply
    221,383.91x = 332,321.70 × 114,739.31
  4. Step 4: Simplify right side
    221,383.91x = 38,130,360,320.72
  5. Step 5: Solve for x
    x = 38,130,360,320.72/221,383.91
  6. Step 6: Final answer
    x = 172,236.37

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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.