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Finding the Fourth Proportional to 203,389.44, 305,171.28 and 98,286.72

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Solution

The fourth proportional to 203,389.44, 305,171.28 and 98,286.72 is: 147,472.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,389.44 : 305,171.28 = 98,286.72 : x
  2. Step 2: Convert to fraction form
    203,389.44/305,171.28 = 98,286.72/x
  3. Step 3: Cross multiply
    203,389.44x = 305,171.28 × 98,286.72
  4. Step 4: Simplify right side
    203,389.44x = 29,994,284,149.40
  5. Step 5: Solve for x
    x = 29,994,284,149.40/203,389.44
  6. Step 6: Final answer
    x = 147,472.18

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1.5x scale

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.