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Finding the Fourth Proportional to 258,093.92, 386,517.93 and 155,215.39

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Solution

The fourth proportional to 258,093.92, 386,517.93 and 155,215.39 is: 232,448.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,093.92 : 386,517.93 = 155,215.39 : x
  2. Step 2: Convert to fraction form
    258,093.92/386,517.93 = 155,215.39/x
  3. Step 3: Cross multiply
    258,093.92x = 386,517.93 × 155,215.39
  4. Step 4: Simplify right side
    258,093.92x = 59,993,529,698.59
  5. Step 5: Solve for x
    x = 59,993,529,698.59/258,093.92
  6. Step 6: Final answer
    x = 232,448.45

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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.