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Finding the Fourth Proportional to 203,687.60, 305,122.44 and 103,843.76

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Solution

The fourth proportional to 203,687.60, 305,122.44 and 103,843.76 is: 155,557.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,687.60 : 305,122.44 = 103,843.76 : x
  2. Step 2: Convert to fraction form
    203,687.60/305,122.44 = 103,843.76/x
  3. Step 3: Cross multiply
    203,687.60x = 305,122.44 × 103,843.76
  4. Step 4: Simplify right side
    203,687.60x = 31,685,061,429.97
  5. Step 5: Solve for x
    x = 31,685,061,429.97/203,687.60
  6. Step 6: Final answer
    x = 155,557.14

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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.