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Finding the Fourth Proportional to 251,353.13, 346,867.31 and 138,175.88

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Solution

The fourth proportional to 251,353.13, 346,867.31 and 138,175.88 is: 190,682.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,353.13 : 346,867.31 = 138,175.88 : x
  2. Step 2: Convert to fraction form
    251,353.13/346,867.31 = 138,175.88/x
  3. Step 3: Cross multiply
    251,353.13x = 346,867.31 × 138,175.88
  4. Step 4: Simplify right side
    251,353.13x = 47,928,694,413.59
  5. Step 5: Solve for x
    x = 47,928,694,413.59/251,353.13
  6. Step 6: Final answer
    x = 190,682.71

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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.