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Finding the Fourth Proportional to 306,034.73, 421,882.82 and 213,867.87

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Solution

The fourth proportional to 306,034.73, 421,882.82 and 213,867.87 is: 294,826.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,034.73 : 421,882.82 = 213,867.87 : x
  2. Step 2: Convert to fraction form
    306,034.73/421,882.82 = 213,867.87/x
  3. Step 3: Cross multiply
    306,034.73x = 421,882.82 × 213,867.87
  4. Step 4: Simplify right side
    306,034.73x = 90,227,180,102.99
  5. Step 5: Solve for x
    x = 90,227,180,102.99/306,034.73
  6. Step 6: Final answer
    x = 294,826.60

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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.