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Finding the Fourth Proportional to 251,179.30, 376,693.80 and 82,668.52

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Solution

The fourth proportional to 251,179.30, 376,693.80 and 82,668.52 is: 123,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,179.30 : 376,693.80 = 82,668.52 : x
  2. Step 2: Convert to fraction form
    251,179.30/376,693.80 = 82,668.52/x
  3. Step 3: Cross multiply
    251,179.30x = 376,693.80 × 82,668.52
  4. Step 4: Simplify right side
    251,179.30x = 31,140,718,939.18
  5. Step 5: Solve for x
    x = 31,140,718,939.18/251,179.30
  6. Step 6: Final answer
    x = 123,978.05

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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.