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Finding the Fourth Proportional to 215,370.54, 322,728.39 and 102,895.83

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Solution

The fourth proportional to 215,370.54, 322,728.39 and 102,895.83 is: 154,187.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,370.54 : 322,728.39 = 102,895.83 : x
  2. Step 2: Convert to fraction form
    215,370.54/322,728.39 = 102,895.83/x
  3. Step 3: Cross multiply
    215,370.54x = 322,728.39 × 102,895.83
  4. Step 4: Simplify right side
    215,370.54x = 33,207,405,553.61
  5. Step 5: Solve for x
    x = 33,207,405,553.61/215,370.54
  6. Step 6: Final answer
    x = 154,187.32

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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.