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Finding the Fourth Proportional to 203,358.51, 305,121.38 and 89,447.67

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Solution

The fourth proportional to 203,358.51, 305,121.38 and 89,447.67 is: 134,208.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,358.51 : 305,121.38 = 89,447.67 : x
  2. Step 2: Convert to fraction form
    203,358.51/305,121.38 = 89,447.67/x
  3. Step 3: Cross multiply
    203,358.51x = 305,121.38 × 89,447.67
  4. Step 4: Simplify right side
    203,358.51x = 27,292,396,060.95
  5. Step 5: Solve for x
    x = 27,292,396,060.95/203,358.51
  6. Step 6: Final answer
    x = 134,208.28

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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.