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Finding the Fourth Proportional to 381,825.72, 526,888.66 and 220,691.21

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Solution

The fourth proportional to 381,825.72, 526,888.66 and 220,691.21 is: 304,536.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,825.72 : 526,888.66 = 220,691.21 : x
  2. Step 2: Convert to fraction form
    381,825.72/526,888.66 = 220,691.21/x
  3. Step 3: Cross multiply
    381,825.72x = 526,888.66 × 220,691.21
  4. Step 4: Simplify right side
    381,825.72x = 116,279,695,910.68
  5. Step 5: Solve for x
    x = 116,279,695,910.68/381,825.72
  6. Step 6: Final answer
    x = 304,536.05

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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.