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Finding the Fourth Proportional to 455,003.10, 627,900.12 and 251,055.90

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Solution

The fourth proportional to 455,003.10, 627,900.12 and 251,055.90 is: 346,454.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,003.10 : 627,900.12 = 251,055.90 : x
  2. Step 2: Convert to fraction form
    455,003.10/627,900.12 = 251,055.90/x
  3. Step 3: Cross multiply
    455,003.10x = 627,900.12 × 251,055.90
  4. Step 4: Simplify right side
    455,003.10x = 157,638,029,736.71
  5. Step 5: Solve for x
    x = 157,638,029,736.71/455,003.10
  6. Step 6: Final answer
    x = 346,454.85

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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.