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Finding the Fourth Proportional to 275,439.62, 412,273.70 and 142,138.33

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Solution

The fourth proportional to 275,439.62, 412,273.70 and 142,138.33 is: 212,750.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,439.62 : 412,273.70 = 142,138.33 : x
  2. Step 2: Convert to fraction form
    275,439.62/412,273.70 = 142,138.33/x
  3. Step 3: Cross multiply
    275,439.62x = 412,273.70 × 142,138.33
  4. Step 4: Simplify right side
    275,439.62x = 58,599,894,012.56
  5. Step 5: Solve for x
    x = 58,599,894,012.56/275,439.62
  6. Step 6: Final answer
    x = 212,750.42

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1.5x scale

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.