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Finding the Fourth Proportional to 447,069.78, 616,960.43 and 243,122.64

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Solution

The fourth proportional to 447,069.78, 616,960.43 and 243,122.64 is: 335,511.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,069.78 : 616,960.43 = 243,122.64 : x
  2. Step 2: Convert to fraction form
    447,069.78/616,960.43 = 243,122.64/x
  3. Step 3: Cross multiply
    447,069.78x = 616,960.43 × 243,122.64
  4. Step 4: Simplify right side
    447,069.78x = 149,997,048,517.14
  5. Step 5: Solve for x
    x = 149,997,048,517.14/447,069.78
  6. Step 6: Final answer
    x = 335,511.49

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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.