Home / 379,489.62-523,664.28-209,723.34

Finding the Fourth Proportional to 379,489.62, 523,664.28 and 209,723.34

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Solution

The fourth proportional to 379,489.62, 523,664.28 and 209,723.34 is: 289,400.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,489.62 : 523,664.28 = 209,723.34 : x
  2. Step 2: Convert to fraction form
    379,489.62/523,664.28 = 209,723.34/x
  3. Step 3: Cross multiply
    379,489.62x = 523,664.28 × 209,723.34
  4. Step 4: Simplify right side
    379,489.62x = 109,824,621,840.30
  5. Step 5: Solve for x
    x = 109,824,621,840.30/379,489.62
  6. Step 6: Final answer
    x = 289,400.86

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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.