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Finding the Fourth Proportional to 221,601.64, 305,834.34 and 136,716.52

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Solution

The fourth proportional to 221,601.64, 305,834.34 and 136,716.52 is: 188,683.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,601.64 : 305,834.34 = 136,716.52 : x
  2. Step 2: Convert to fraction form
    221,601.64/305,834.34 = 136,716.52/x
  3. Step 3: Cross multiply
    221,601.64x = 305,834.34 × 136,716.52
  4. Step 4: Simplify right side
    221,601.64x = 41,812,606,661.30
  5. Step 5: Solve for x
    x = 41,812,606,661.30/221,601.64
  6. Step 6: Final answer
    x = 188,683.65

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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.