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Finding the Fourth Proportional to 225,731.81, 338,604.91 and 83,612.86

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Solution

The fourth proportional to 225,731.81, 338,604.91 and 83,612.86 is: 125,421.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,731.81 : 338,604.91 = 83,612.86 : x
  2. Step 2: Convert to fraction form
    225,731.81/338,604.91 = 83,612.86/x
  3. Step 3: Cross multiply
    225,731.81x = 338,604.91 × 83,612.86
  4. Step 4: Simplify right side
    225,731.81x = 28,311,723,879.60
  5. Step 5: Solve for x
    x = 28,311,723,879.60/225,731.81
  6. Step 6: Final answer
    x = 125,421.95

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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.