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Finding the Fourth Proportional to 251,695.44, 379,264.14 and 208,279.44

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Solution

The fourth proportional to 251,695.44, 379,264.14 and 208,279.44 is: 313,843.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,695.44 : 379,264.14 = 208,279.44 : x
  2. Step 2: Convert to fraction form
    251,695.44/379,264.14 = 208,279.44/x
  3. Step 3: Cross multiply
    251,695.44x = 379,264.14 × 208,279.44
  4. Step 4: Simplify right side
    251,695.44x = 78,992,922,691.28
  5. Step 5: Solve for x
    x = 78,992,922,691.28/251,695.44
  6. Step 6: Final answer
    x = 313,843.28

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.