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Finding the Fourth Proportional to 455,067.74, 627,992.99 and 251,118.60

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Solution

The fourth proportional to 455,067.74, 627,992.99 and 251,118.60 is: 346,543.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,067.74 : 627,992.99 = 251,118.60 : x
  2. Step 2: Convert to fraction form
    455,067.74/627,992.99 = 251,118.60/x
  3. Step 3: Cross multiply
    455,067.74x = 627,992.99 × 251,118.60
  4. Step 4: Simplify right side
    455,067.74x = 157,700,719,203.02
  5. Step 5: Solve for x
    x = 157,700,719,203.02/455,067.74
  6. Step 6: Final answer
    x = 346,543.40

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1.5x scale

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.