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Finding the Fourth Proportional to 455,211.44, 628,191.84 and 251,262.41

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Solution

The fourth proportional to 455,211.44, 628,191.84 and 251,262.41 is: 346,742.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,211.44 : 628,191.84 = 251,262.41 : x
  2. Step 2: Convert to fraction form
    455,211.44/628,191.84 = 251,262.41/x
  3. Step 3: Cross multiply
    455,211.44x = 628,191.84 × 251,262.41
  4. Step 4: Simplify right side
    455,211.44x = 157,840,995,660.73
  5. Step 5: Solve for x
    x = 157,840,995,660.73/455,211.44
  6. Step 6: Final answer
    x = 346,742.15

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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.