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Finding the Fourth Proportional to 449,997.54, 621,034.86 and 256,464.48

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Solution

The fourth proportional to 449,997.54, 621,034.86 and 256,464.48 is: 353,942.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,997.54 : 621,034.86 = 256,464.48 : x
  2. Step 2: Convert to fraction form
    449,997.54/621,034.86 = 256,464.48/x
  3. Step 3: Cross multiply
    449,997.54x = 621,034.86 × 256,464.48
  4. Step 4: Simplify right side
    449,997.54x = 159,273,382,431.77
  5. Step 5: Solve for x
    x = 159,273,382,431.77/449,997.54
  6. Step 6: Final answer
    x = 353,942.78

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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.