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Finding the Fourth Proportional to 379,469.37, 523,678.56 and 207,396.90

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Solution

The fourth proportional to 379,469.37, 523,678.56 and 207,396.90 is: 286,213.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,469.37 : 523,678.56 = 207,396.90 : x
  2. Step 2: Convert to fraction form
    379,469.37/523,678.56 = 207,396.90/x
  3. Step 3: Cross multiply
    379,469.37x = 523,678.56 × 207,396.90
  4. Step 4: Simplify right side
    379,469.37x = 108,609,309,940.46
  5. Step 5: Solve for x
    x = 108,609,309,940.46/379,469.37
  6. Step 6: Final answer
    x = 286,213.64

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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.