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Finding the Fourth Proportional to 455,063.33, 627,989.29 and 251,120.25

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Solution

The fourth proportional to 455,063.33, 627,989.29 and 251,120.25 is: 346,546.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,063.33 : 627,989.29 = 251,120.25 : x
  2. Step 2: Convert to fraction form
    455,063.33/627,989.29 = 251,120.25/x
  3. Step 3: Cross multiply
    455,063.33x = 627,989.29 × 251,120.25
  4. Step 4: Simplify right side
    455,063.33x = 157,700,826,874.32
  5. Step 5: Solve for x
    x = 157,700,826,874.32/455,063.33
  6. Step 6: Final answer
    x = 346,546.99

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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.