Home / 379,651.24-523,892.40-209,872

Finding the Fourth Proportional to 379,651.24, 523,892.40 and 209,872

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Solution

The fourth proportional to 379,651.24, 523,892.40 and 209,872 is: 289,608.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,651.24 : 523,892.40 = 209,872 : x
  2. Step 2: Convert to fraction form
    379,651.24/523,892.40 = 209,872/x
  3. Step 3: Cross multiply
    379,651.24x = 523,892.40 × 209,872
  4. Step 4: Simplify right side
    379,651.24x = 109,950,345,772.80
  5. Step 5: Solve for x
    x = 109,950,345,772.80/379,651.24
  6. Step 6: Final answer
    x = 289,608.82

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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.