Home / 379,463.23-523,614.67-209,687.23

Finding the Fourth Proportional to 379,463.23, 523,614.67 and 209,687.23

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Solution

The fourth proportional to 379,463.23, 523,614.67 and 209,687.23 is: 289,343.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,463.23 : 523,614.67 = 209,687.23 : x
  2. Step 2: Convert to fraction form
    379,463.23/523,614.67 = 209,687.23/x
  3. Step 3: Cross multiply
    379,463.23x = 523,614.67 × 209,687.23
  4. Step 4: Simplify right side
    379,463.23x = 109,795,309,739.66
  5. Step 5: Solve for x
    x = 109,795,309,739.66/379,463.23
  6. Step 6: Final answer
    x = 289,343.74

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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.