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Finding the Fourth Proportional to 481,253.64, 721,631.28 and 256,553.73

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Solution

The fourth proportional to 481,253.64, 721,631.28 and 256,553.73 is: 384,697.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,253.64 : 721,631.28 = 256,553.73 : x
  2. Step 2: Convert to fraction form
    481,253.64/721,631.28 = 256,553.73/x
  3. Step 3: Cross multiply
    481,253.64x = 721,631.28 × 256,553.73
  4. Step 4: Simplify right side
    481,253.64x = 185,137,192,960.52
  5. Step 5: Solve for x
    x = 185,137,192,960.52/481,253.64
  6. Step 6: Final answer
    x = 384,697.75

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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.