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Finding the Fourth Proportional to 491,774.31, 678,713.22 and 276,956.37

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Solution

The fourth proportional to 491,774.31, 678,713.22 and 276,956.37 is: 382,236.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,774.31 : 678,713.22 = 276,956.37 : x
  2. Step 2: Convert to fraction form
    491,774.31/678,713.22 = 276,956.37/x
  3. Step 3: Cross multiply
    491,774.31x = 678,713.22 × 276,956.37
  4. Step 4: Simplify right side
    491,774.31x = 187,973,949,682.21
  5. Step 5: Solve for x
    x = 187,973,949,682.21/491,774.31
  6. Step 6: Final answer
    x = 382,236.21

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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.