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Finding the Fourth Proportional to 275,333.54, 412,912.80 and 187,153.70

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Solution

The fourth proportional to 275,333.54, 412,912.80 and 187,153.70 is: 280,671.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,333.54 : 412,912.80 = 187,153.70 : x
  2. Step 2: Convert to fraction form
    275,333.54/412,912.80 = 187,153.70/x
  3. Step 3: Cross multiply
    275,333.54x = 412,912.80 × 187,153.70
  4. Step 4: Simplify right side
    275,333.54x = 77,278,158,297.36
  5. Step 5: Solve for x
    x = 77,278,158,297.36/275,333.54
  6. Step 6: Final answer
    x = 280,671.07

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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.