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Finding the Fourth Proportional to 455,057.64, 627,951.30 and 251,110.17

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Solution

The fourth proportional to 455,057.64, 627,951.30 and 251,110.17 is: 346,516.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,057.64 : 627,951.30 = 251,110.17 : x
  2. Step 2: Convert to fraction form
    455,057.64/627,951.30 = 251,110.17/x
  3. Step 3: Cross multiply
    455,057.64x = 627,951.30 × 251,110.17
  4. Step 4: Simplify right side
    455,057.64x = 157,684,957,694.72
  5. Step 5: Solve for x
    x = 157,684,957,694.72/455,057.64
  6. Step 6: Final answer
    x = 346,516.45

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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.