Home / 379,057.25-523,109.78-206,986.15

Finding the Fourth Proportional to 379,057.25, 523,109.78 and 206,986.15

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Solution

The fourth proportional to 379,057.25, 523,109.78 and 206,986.15 is: 285,646.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,057.25 : 523,109.78 = 206,986.15 : x
  2. Step 2: Convert to fraction form
    379,057.25/523,109.78 = 206,986.15/x
  3. Step 3: Cross multiply
    379,057.25x = 523,109.78 × 206,986.15
  4. Step 4: Simplify right side
    379,057.25x = 108,276,479,784.70
  5. Step 5: Solve for x
    x = 108,276,479,784.70/379,057.25
  6. Step 6: Final answer
    x = 285,646.77

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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.