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Finding the Fourth Proportional to 203,516.55, 305,289.40 and 53,755.34

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Solution

The fourth proportional to 203,516.55, 305,289.40 and 53,755.34 is: 80,636.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,516.55 : 305,289.40 = 53,755.34 : x
  2. Step 2: Convert to fraction form
    203,516.55/305,289.40 = 53,755.34/x
  3. Step 3: Cross multiply
    203,516.55x = 305,289.40 × 53,755.34
  4. Step 4: Simplify right side
    203,516.55x = 16,410,935,226.62
  5. Step 5: Solve for x
    x = 16,410,935,226.62/203,516.55
  6. Step 6: Final answer
    x = 80,636.86

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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.