Home / 221,379.37-305,527.07-135,388.66

Finding the Fourth Proportional to 221,379.37, 305,527.07 and 135,388.66

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Solution

The fourth proportional to 221,379.37, 305,527.07 and 135,388.66 is: 186,850.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,379.37 : 305,527.07 = 135,388.66 : x
  2. Step 2: Convert to fraction form
    221,379.37/305,527.07 = 135,388.66/x
  3. Step 3: Cross multiply
    221,379.37x = 305,527.07 × 135,388.66
  4. Step 4: Simplify right side
    221,379.37x = 41,364,899,160.27
  5. Step 5: Solve for x
    x = 41,364,899,160.27/221,379.37
  6. Step 6: Final answer
    x = 186,850.74

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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.