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Finding the Fourth Proportional to 403,173.34, 605,134.20 and 203,633.84

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Solution

The fourth proportional to 403,173.34, 605,134.20 and 203,633.84 is: 305,639.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,173.34 : 605,134.20 = 203,633.84 : x
  2. Step 2: Convert to fraction form
    403,173.34/605,134.20 = 203,633.84/x
  3. Step 3: Cross multiply
    403,173.34x = 605,134.20 × 203,633.84
  4. Step 4: Simplify right side
    403,173.34x = 123,225,800,861.33
  5. Step 5: Solve for x
    x = 123,225,800,861.33/403,173.34
  6. Step 6: Final answer
    x = 305,639.76

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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.