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Finding the Fourth Proportional to 291,481.54, 437,233.83 and 81,137.86

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Solution

The fourth proportional to 291,481.54, 437,233.83 and 81,137.86 is: 121,710.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,481.54 : 437,233.83 = 81,137.86 : x
  2. Step 2: Convert to fraction form
    291,481.54/437,233.83 = 81,137.86/x
  3. Step 3: Cross multiply
    291,481.54x = 437,233.83 × 81,137.86
  4. Step 4: Simplify right side
    291,481.54x = 35,476,217,285.80
  5. Step 5: Solve for x
    x = 35,476,217,285.80/291,481.54
  6. Step 6: Final answer
    x = 121,710.00

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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.