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Finding the Fourth Proportional to 447,785.22, 617,958.88 and 243,839.64

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Solution

The fourth proportional to 447,785.22, 617,958.88 and 243,839.64 is: 336,507.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,785.22 : 617,958.88 = 243,839.64 : x
  2. Step 2: Convert to fraction form
    447,785.22/617,958.88 = 243,839.64/x
  3. Step 3: Cross multiply
    447,785.22x = 617,958.88 × 243,839.64
  4. Step 4: Simplify right side
    447,785.22x = 150,682,870,834.00
  5. Step 5: Solve for x
    x = 150,682,870,834.00/447,785.22
  6. Step 6: Final answer
    x = 336,507.02

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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.