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Finding the Fourth Proportional to 447,418.55, 617,425.16 and 243,464.73

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Solution

The fourth proportional to 447,418.55, 617,425.16 and 243,464.73 is: 335,974.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,418.55 : 617,425.16 = 243,464.73 : x
  2. Step 2: Convert to fraction form
    447,418.55/617,425.16 = 243,464.73/x
  3. Step 3: Cross multiply
    447,418.55x = 617,425.16 × 243,464.73
  4. Step 4: Simplify right side
    447,418.55x = 150,321,248,657.28
  5. Step 5: Solve for x
    x = 150,321,248,657.28/447,418.55
  6. Step 6: Final answer
    x = 335,974.56

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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.