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Finding the Fourth Proportional to 203,555.50, 280,919.31 and 117,530.22

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Solution

The fourth proportional to 203,555.50, 280,919.31 and 117,530.22 is: 162,199.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,555.50 : 280,919.31 = 117,530.22 : x
  2. Step 2: Convert to fraction form
    203,555.50/280,919.31 = 117,530.22/x
  3. Step 3: Cross multiply
    203,555.50x = 280,919.31 × 117,530.22
  4. Step 4: Simplify right side
    203,555.50x = 33,016,508,306.55
  5. Step 5: Solve for x
    x = 33,016,508,306.55/203,555.50
  6. Step 6: Final answer
    x = 162,199.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.