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Finding the Fourth Proportional to 455,227.45, 628,213.91 and 251,278.42

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Solution

The fourth proportional to 455,227.45, 628,213.91 and 251,278.42 is: 346,764.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,227.45 : 628,213.91 = 251,278.42 : x
  2. Step 2: Convert to fraction form
    455,227.45/628,213.91 = 251,278.42/x
  3. Step 3: Cross multiply
    455,227.45x = 628,213.91 × 251,278.42
  4. Step 4: Simplify right side
    455,227.45x = 157,856,598,726.82
  5. Step 5: Solve for x
    x = 157,856,598,726.82/455,227.45
  6. Step 6: Final answer
    x = 346,764.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.