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Finding the Fourth Proportional to 203,685.60, 305,163.90 and 98,272.20

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Solution

The fourth proportional to 203,685.60, 305,163.90 and 98,272.20 is: 147,232.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,685.60 : 305,163.90 = 98,272.20 : x
  2. Step 2: Convert to fraction form
    203,685.60/305,163.90 = 98,272.20/x
  3. Step 3: Cross multiply
    203,685.60x = 305,163.90 × 98,272.20
  4. Step 4: Simplify right side
    203,685.60x = 29,989,127,813.58
  5. Step 5: Solve for x
    x = 29,989,127,813.58/203,685.60
  6. Step 6: Final answer
    x = 147,232.44

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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.