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Finding the Fourth Proportional to 203,808.48, 305,595 and 79,003.68

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Solution

The fourth proportional to 203,808.48, 305,595 and 79,003.68 is: 118,459.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,808.48 : 305,595 = 79,003.68 : x
  2. Step 2: Convert to fraction form
    203,808.48/305,595 = 79,003.68/x
  3. Step 3: Cross multiply
    203,808.48x = 305,595 × 79,003.68
  4. Step 4: Simplify right side
    203,808.48x = 24,143,129,589.60
  5. Step 5: Solve for x
    x = 24,143,129,589.60/203,808.48
  6. Step 6: Final answer
    x = 118,459.89

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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.