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Finding the Fourth Proportional to 447,781.87, 617,930.08 and 243,835.21

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Solution

The fourth proportional to 447,781.87, 617,930.08 and 243,835.21 is: 336,487.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,781.87 : 617,930.08 = 243,835.21 : x
  2. Step 2: Convert to fraction form
    447,781.87/617,930.08 = 243,835.21/x
  3. Step 3: Cross multiply
    447,781.87x = 617,930.08 × 243,835.21
  4. Step 4: Simplify right side
    447,781.87x = 150,673,110,822.12
  5. Step 5: Solve for x
    x = 150,673,110,822.12/447,781.87
  6. Step 6: Final answer
    x = 336,487.74

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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.