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Finding the Fourth Proportional to 251,080.26, 376,631.78 and 71,178.56

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Solution

The fourth proportional to 251,080.26, 376,631.78 and 71,178.56 is: 106,771.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,080.26 : 376,631.78 = 71,178.56 : x
  2. Step 2: Convert to fraction form
    251,080.26/376,631.78 = 71,178.56/x
  3. Step 3: Cross multiply
    251,080.26x = 376,631.78 × 71,178.56
  4. Step 4: Simplify right side
    251,080.26x = 26,808,105,511.59
  5. Step 5: Solve for x
    x = 26,808,105,511.59/251,080.26
  6. Step 6: Final answer
    x = 106,771.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.