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Finding the Fourth Proportional to 258,093.54, 386,517.36 and 155,215.01

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Solution

The fourth proportional to 258,093.54, 386,517.36 and 155,215.01 is: 232,447.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,093.54 : 386,517.36 = 155,215.01 : x
  2. Step 2: Convert to fraction form
    258,093.54/386,517.36 = 155,215.01/x
  3. Step 3: Cross multiply
    258,093.54x = 386,517.36 × 155,215.01
  4. Step 4: Simplify right side
    258,093.54x = 59,993,297,445.92
  5. Step 5: Solve for x
    x = 59,993,297,445.92/258,093.54
  6. Step 6: Final answer
    x = 232,447.88

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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.