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Finding the Fourth Proportional to 447,391.62, 617,391.26 and 243,446.58

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Solution

The fourth proportional to 447,391.62, 617,391.26 and 243,446.58 is: 335,951.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,391.62 : 617,391.26 = 243,446.58 : x
  2. Step 2: Convert to fraction form
    447,391.62/617,391.26 = 243,446.58/x
  3. Step 3: Cross multiply
    447,391.62x = 617,391.26 × 243,446.58
  4. Step 4: Simplify right side
    447,391.62x = 150,301,790,768.89
  5. Step 5: Solve for x
    x = 150,301,790,768.89/447,391.62
  6. Step 6: Final answer
    x = 335,951.29

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1.5x scale

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.