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Finding the Fourth Proportional to 203,273.58, 305,189.66 and 103,500.81

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Solution

The fourth proportional to 203,273.58, 305,189.66 and 103,500.81 is: 155,393.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,273.58 : 305,189.66 = 103,500.81 : x
  2. Step 2: Convert to fraction form
    203,273.58/305,189.66 = 103,500.81/x
  3. Step 3: Cross multiply
    203,273.58x = 305,189.66 × 103,500.81
  4. Step 4: Simplify right side
    203,273.58x = 31,587,376,496.12
  5. Step 5: Solve for x
    x = 31,587,376,496.12/203,273.58
  6. Step 6: Final answer
    x = 155,393.42

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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.