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Finding the Fourth Proportional to 379,584.99, 523,469.25 and 243,660.51

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Solution

The fourth proportional to 379,584.99, 523,469.25 and 243,660.51 is: 336,021.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,584.99 : 523,469.25 = 243,660.51 : x
  2. Step 2: Convert to fraction form
    379,584.99/523,469.25 = 243,660.51/x
  3. Step 3: Cross multiply
    379,584.99x = 523,469.25 × 243,660.51
  4. Step 4: Simplify right side
    379,584.99x = 127,548,784,424.32
  5. Step 5: Solve for x
    x = 127,548,784,424.32/379,584.99
  6. Step 6: Final answer
    x = 336,021.68

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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.