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Finding the Fourth Proportional to 381,828.72, 526,892.80 and 220,694.21

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Solution

The fourth proportional to 381,828.72, 526,892.80 and 220,694.21 is: 304,540.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,828.72 : 526,892.80 = 220,694.21 : x
  2. Step 2: Convert to fraction form
    381,828.72/526,892.80 = 220,694.21/x
  3. Step 3: Cross multiply
    381,828.72x = 526,892.80 × 220,694.21
  4. Step 4: Simplify right side
    381,828.72x = 116,282,190,250.69
  5. Step 5: Solve for x
    x = 116,282,190,250.69/381,828.72
  6. Step 6: Final answer
    x = 304,540.19

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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.