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Finding the Fourth Proportional to 379,201.07, 523,288.07 and 218,052.28

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Solution

The fourth proportional to 379,201.07, 523,288.07 and 218,052.28 is: 300,906.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,201.07 : 523,288.07 = 218,052.28 : x
  2. Step 2: Convert to fraction form
    379,201.07/523,288.07 = 218,052.28/x
  3. Step 3: Cross multiply
    379,201.07x = 523,288.07 × 218,052.28
  4. Step 4: Simplify right side
    379,201.07x = 114,104,156,760.30
  5. Step 5: Solve for x
    x = 114,104,156,760.30/379,201.07
  6. Step 6: Final answer
    x = 300,906.74

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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.