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Finding the Fourth Proportional to 447,348, 617,353.20 and 246,144

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Solution

The fourth proportional to 447,348, 617,353.20 and 246,144 is: 339,685.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,348 : 617,353.20 = 246,144 : x
  2. Step 2: Convert to fraction form
    447,348/617,353.20 = 246,144/x
  3. Step 3: Cross multiply
    447,348x = 617,353.20 × 246,144
  4. Step 4: Simplify right side
    447,348x = 151,957,786,060.80
  5. Step 5: Solve for x
    x = 151,957,786,060.80/447,348
  6. Step 6: Final answer
    x = 339,685.85

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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.