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Finding the Fourth Proportional to 455,286.76, 628,296.66 and 251,337.95

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Solution

The fourth proportional to 455,286.76, 628,296.66 and 251,337.95 is: 346,846.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,286.76 : 628,296.66 = 251,337.95 : x
  2. Step 2: Convert to fraction form
    455,286.76/628,296.66 = 251,337.95/x
  3. Step 3: Cross multiply
    455,286.76x = 628,296.66 × 251,337.95
  4. Step 4: Simplify right side
    455,286.76x = 157,914,794,516.25
  5. Step 5: Solve for x
    x = 157,914,794,516.25/455,286.76
  6. Step 6: Final answer
    x = 346,846.89

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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.