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Finding the Fourth Proportional to 203,105.80, 304,658.70 and 69,974.20

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Solution

The fourth proportional to 203,105.80, 304,658.70 and 69,974.20 is: 104,961.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,105.80 : 304,658.70 = 69,974.20 : x
  2. Step 2: Convert to fraction form
    203,105.80/304,658.70 = 69,974.20/x
  3. Step 3: Cross multiply
    203,105.80x = 304,658.70 × 69,974.20
  4. Step 4: Simplify right side
    203,105.80x = 21,318,248,805.54
  5. Step 5: Solve for x
    x = 21,318,248,805.54/203,105.80
  6. Step 6: Final answer
    x = 104,961.30

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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.