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Finding the Fourth Proportional to 203,508.34, 305,204.12 and 68,557.76

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Solution

The fourth proportional to 203,508.34, 305,204.12 and 68,557.76 is: 102,816.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,508.34 : 305,204.12 = 68,557.76 : x
  2. Step 2: Convert to fraction form
    203,508.34/305,204.12 = 68,557.76/x
  3. Step 3: Cross multiply
    203,508.34x = 305,204.12 × 68,557.76
  4. Step 4: Simplify right side
    203,508.34x = 20,924,110,809.97
  5. Step 5: Solve for x
    x = 20,924,110,809.97/203,508.34
  6. Step 6: Final answer
    x = 102,816.97

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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.