Home / 221,027.81-331,541.72-80,786.44

Finding the Fourth Proportional to 221,027.81, 331,541.72 and 80,786.44

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Solution

The fourth proportional to 221,027.81, 331,541.72 and 80,786.44 is: 121,179.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,027.81 : 331,541.72 = 80,786.44 : x
  2. Step 2: Convert to fraction form
    221,027.81/331,541.72 = 80,786.44/x
  3. Step 3: Cross multiply
    221,027.81x = 331,541.72 × 80,786.44
  4. Step 4: Simplify right side
    221,027.81x = 26,784,074,643.39
  5. Step 5: Solve for x
    x = 26,784,074,643.39/221,027.81
  6. Step 6: Final answer
    x = 121,179.66

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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.