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Finding the Fourth Proportional to 251,208.68, 376,732.52 and 82,689.80

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Solution

The fourth proportional to 251,208.68, 376,732.52 and 82,689.80 is: 124,008.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,208.68 : 376,732.52 = 82,689.80 : x
  2. Step 2: Convert to fraction form
    251,208.68/376,732.52 = 82,689.80/x
  3. Step 3: Cross multiply
    251,208.68x = 376,732.52 × 82,689.80
  4. Step 4: Simplify right side
    251,208.68x = 31,151,936,732.30
  5. Step 5: Solve for x
    x = 31,151,936,732.30/251,208.68
  6. Step 6: Final answer
    x = 124,008.20

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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.