Home / 379,168.92-523,256.22-209,405.88

Finding the Fourth Proportional to 379,168.92, 523,256.22 and 209,405.88

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Solution

The fourth proportional to 379,168.92, 523,256.22 and 209,405.88 is: 288,981.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,168.92 : 523,256.22 = 209,405.88 : x
  2. Step 2: Convert to fraction form
    379,168.92/523,256.22 = 209,405.88/x
  3. Step 3: Cross multiply
    379,168.92x = 523,256.22 × 209,405.88
  4. Step 4: Simplify right side
    379,168.92x = 109,572,929,214.57
  5. Step 5: Solve for x
    x = 109,572,929,214.57/379,168.92
  6. Step 6: Final answer
    x = 288,981.83

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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.