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Finding the Fourth Proportional to 225,639.02, 338,475.54 and 75,879.74

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Solution

The fourth proportional to 225,639.02, 338,475.54 and 75,879.74 is: 113,825.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,639.02 : 338,475.54 = 75,879.74 : x
  2. Step 2: Convert to fraction form
    225,639.02/338,475.54 = 75,879.74/x
  3. Step 3: Cross multiply
    225,639.02x = 338,475.54 × 75,879.74
  4. Step 4: Simplify right side
    225,639.02x = 25,683,435,971.56
  5. Step 5: Solve for x
    x = 25,683,435,971.56/225,639.02
  6. Step 6: Final answer
    x = 113,825.33

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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.