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Finding the Fourth Proportional to 203,927.40, 305,398.87 and 122,640.66

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Solution

The fourth proportional to 203,927.40, 305,398.87 and 122,640.66 is: 183,664.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,927.40 : 305,398.87 = 122,640.66 : x
  2. Step 2: Convert to fraction form
    203,927.40/305,398.87 = 122,640.66/x
  3. Step 3: Cross multiply
    203,927.40x = 305,398.87 × 122,640.66
  4. Step 4: Simplify right side
    203,927.40x = 37,454,318,673.45
  5. Step 5: Solve for x
    x = 37,454,318,673.45/203,927.40
  6. Step 6: Final answer
    x = 183,664.96

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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.