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Finding the Fourth Proportional to 220,491.96, 330,784.92 and 125,767.32

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Solution

The fourth proportional to 220,491.96, 330,784.92 and 125,767.32 is: 188,677.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,491.96 : 330,784.92 = 125,767.32 : x
  2. Step 2: Convert to fraction form
    220,491.96/330,784.92 = 125,767.32/x
  3. Step 3: Cross multiply
    220,491.96x = 330,784.92 × 125,767.32
  4. Step 4: Simplify right side
    220,491.96x = 41,601,932,884.81
  5. Step 5: Solve for x
    x = 41,601,932,884.81/220,491.96
  6. Step 6: Final answer
    x = 188,677.78

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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.