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Finding the Fourth Proportional to 331,257.80, 496,886.70 and 256,608.20

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Solution

The fourth proportional to 331,257.80, 496,886.70 and 256,608.20 is: 384,912.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,257.80 : 496,886.70 = 256,608.20 : x
  2. Step 2: Convert to fraction form
    331,257.80/496,886.70 = 256,608.20/x
  3. Step 3: Cross multiply
    331,257.80x = 496,886.70 × 256,608.20
  4. Step 4: Simplify right side
    331,257.80x = 127,505,201,690.94
  5. Step 5: Solve for x
    x = 127,505,201,690.94/331,257.80
  6. Step 6: Final answer
    x = 384,912.30

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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.