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Finding the Fourth Proportional to 455,229.63, 628,216.92 and 251,280.63

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Solution

The fourth proportional to 455,229.63, 628,216.92 and 251,280.63 is: 346,767.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,229.63 : 628,216.92 = 251,280.63 : x
  2. Step 2: Convert to fraction form
    455,229.63/628,216.92 = 251,280.63/x
  3. Step 3: Cross multiply
    455,229.63x = 628,216.92 × 251,280.63
  4. Step 4: Simplify right side
    455,229.63x = 157,858,743,434.26
  5. Step 5: Solve for x
    x = 157,858,743,434.26/455,229.63
  6. Step 6: Final answer
    x = 346,767.29

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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.