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Finding the Fourth Proportional to 455,058.58, 627,982.70 and 251,115.47

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Solution

The fourth proportional to 455,058.58, 627,982.70 and 251,115.47 is: 346,540.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,058.58 : 627,982.70 = 251,115.47 : x
  2. Step 2: Convert to fraction form
    455,058.58/627,982.70 = 251,115.47/x
  3. Step 3: Cross multiply
    455,058.58x = 627,982.70 × 251,115.47
  4. Step 4: Simplify right side
    455,058.58x = 157,696,170,862.37
  5. Step 5: Solve for x
    x = 157,696,170,862.37/455,058.58
  6. Step 6: Final answer
    x = 346,540.37

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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.