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Finding the Fourth Proportional to 251,277.69, 376,972.11 and 82,791.21

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Solution

The fourth proportional to 251,277.69, 376,972.11 and 82,791.21 is: 124,205.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,277.69 : 376,972.11 = 82,791.21 : x
  2. Step 2: Convert to fraction form
    251,277.69/376,972.11 = 82,791.21/x
  3. Step 3: Cross multiply
    251,277.69x = 376,972.11 × 82,791.21
  4. Step 4: Simplify right side
    251,277.69x = 31,209,977,123.15
  5. Step 5: Solve for x
    x = 31,209,977,123.15/251,277.69
  6. Step 6: Final answer
    x = 124,205.13

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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.