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Finding the Fourth Proportional to 331,261.80, 496,892.70 and 256,612.20

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Solution

The fourth proportional to 331,261.80, 496,892.70 and 256,612.20 is: 384,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,261.80 : 496,892.70 = 256,612.20 : x
  2. Step 2: Convert to fraction form
    331,261.80/496,892.70 = 256,612.20/x
  3. Step 3: Cross multiply
    331,261.80x = 496,892.70 × 256,612.20
  4. Step 4: Simplify right side
    331,261.80x = 127,508,728,910.94
  5. Step 5: Solve for x
    x = 127,508,728,910.94/331,261.80
  6. Step 6: Final answer
    x = 384,918.30

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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.