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Finding the Fourth Proportional to 379,324.70, 566,219.90 and 331,440.54

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Solution

The fourth proportional to 379,324.70, 566,219.90 and 331,440.54 is: 494,742.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,324.70 : 566,219.90 = 331,440.54 : x
  2. Step 2: Convert to fraction form
    379,324.70/566,219.90 = 331,440.54/x
  3. Step 3: Cross multiply
    379,324.70x = 566,219.90 × 331,440.54
  4. Step 4: Simplify right side
    379,324.70x = 187,668,231,203.06
  5. Step 5: Solve for x
    x = 187,668,231,203.06/379,324.70
  6. Step 6: Final answer
    x = 494,742.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.