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Finding the Fourth Proportional to 258,067.96, 386,948.62 and 98,155.60

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Solution

The fourth proportional to 258,067.96, 386,948.62 and 98,155.60 is: 147,175.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,067.96 : 386,948.62 = 98,155.60 : x
  2. Step 2: Convert to fraction form
    258,067.96/386,948.62 = 98,155.60/x
  3. Step 3: Cross multiply
    258,067.96x = 386,948.62 × 98,155.60
  4. Step 4: Simplify right side
    258,067.96x = 37,981,173,965.27
  5. Step 5: Solve for x
    x = 37,981,173,965.27/258,067.96
  6. Step 6: Final answer
    x = 147,175.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.