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Finding the Fourth Proportional to 397,458.87, 548,280.32 and 276,389.97

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Solution

The fourth proportional to 397,458.87, 548,280.32 and 276,389.97 is: 381,270.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,458.87 : 548,280.32 = 276,389.97 : x
  2. Step 2: Convert to fraction form
    397,458.87/548,280.32 = 276,389.97/x
  3. Step 3: Cross multiply
    397,458.87x = 548,280.32 × 276,389.97
  4. Step 4: Simplify right side
    397,458.87x = 151,539,179,814.44
  5. Step 5: Solve for x
    x = 151,539,179,814.44/397,458.87
  6. Step 6: Final answer
    x = 381,270.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.