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Finding the Fourth Proportional to 203,728.64, 305,651.27 and 98,606.84

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Solution

The fourth proportional to 203,728.64, 305,651.27 and 98,606.84 is: 147,938.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,728.64 : 305,651.27 = 98,606.84 : x
  2. Step 2: Convert to fraction form
    203,728.64/305,651.27 = 98,606.84/x
  3. Step 3: Cross multiply
    203,728.64x = 305,651.27 × 98,606.84
  4. Step 4: Simplify right side
    203,728.64x = 30,139,304,594.95
  5. Step 5: Solve for x
    x = 30,139,304,594.95/203,728.64
  6. Step 6: Final answer
    x = 147,938.48

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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.