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Finding the Fourth Proportional to 203,795.80, 305,693.46 and 133,658.70

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Solution

The fourth proportional to 203,795.80, 305,693.46 and 133,658.70 is: 200,487.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,795.80 : 305,693.46 = 133,658.70 : x
  2. Step 2: Convert to fraction form
    203,795.80/305,693.46 = 133,658.70/x
  3. Step 3: Cross multiply
    203,795.80x = 305,693.46 × 133,658.70
  4. Step 4: Simplify right side
    203,795.80x = 40,858,590,462.10
  5. Step 5: Solve for x
    x = 40,858,590,462.10/203,795.80
  6. Step 6: Final answer
    x = 200,487.89

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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.