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Finding the Fourth Proportional to 203,622.53, 305,552.86 and 85,283.96

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Solution

The fourth proportional to 203,622.53, 305,552.86 and 85,283.96 is: 127,975.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,622.53 : 305,552.86 = 85,283.96 : x
  2. Step 2: Convert to fraction form
    203,622.53/305,552.86 = 85,283.96/x
  3. Step 3: Cross multiply
    203,622.53x = 305,552.86 × 85,283.96
  4. Step 4: Simplify right side
    203,622.53x = 26,058,756,149.15
  5. Step 5: Solve for x
    x = 26,058,756,149.15/203,622.53
  6. Step 6: Final answer
    x = 127,975.80

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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.