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Finding the Fourth Proportional to 275,639.91, 412,906.28 and 125,673.90

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Solution

The fourth proportional to 275,639.91, 412,906.28 and 125,673.90 is: 188,258.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,639.91 : 412,906.28 = 125,673.90 : x
  2. Step 2: Convert to fraction form
    275,639.91/412,906.28 = 125,673.90/x
  3. Step 3: Cross multiply
    275,639.91x = 412,906.28 × 125,673.90
  4. Step 4: Simplify right side
    275,639.91x = 51,891,541,913.72
  5. Step 5: Solve for x
    x = 51,891,541,913.72/275,639.91
  6. Step 6: Final answer
    x = 188,258.45

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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.