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Finding the Fourth Proportional to 415,037.70, 622,556.55 and 204,648.30

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Solution

The fourth proportional to 415,037.70, 622,556.55 and 204,648.30 is: 306,972.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,037.70 : 622,556.55 = 204,648.30 : x
  2. Step 2: Convert to fraction form
    415,037.70/622,556.55 = 204,648.30/x
  3. Step 3: Cross multiply
    415,037.70x = 622,556.55 × 204,648.30
  4. Step 4: Simplify right side
    415,037.70x = 127,405,139,611.37
  5. Step 5: Solve for x
    x = 127,405,139,611.37/415,037.70
  6. Step 6: Final answer
    x = 306,972.45

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Similar ratio
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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.