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Finding the Fourth Proportional to 203,003.20, 303,921.60 and 124,271.20

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Solution

The fourth proportional to 203,003.20, 303,921.60 and 124,271.20 is: 186,049.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,003.20 : 303,921.60 = 124,271.20 : x
  2. Step 2: Convert to fraction form
    203,003.20/303,921.60 = 124,271.20/x
  3. Step 3: Cross multiply
    203,003.20x = 303,921.60 × 124,271.20
  4. Step 4: Simplify right side
    203,003.20x = 37,768,701,937.92
  5. Step 5: Solve for x
    x = 37,768,701,937.92/203,003.20
  6. Step 6: Final answer
    x = 186,049.79

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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.