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Finding the Fourth Proportional to 415,189.58, 620,509.22 and 303,105.83

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Solution

The fourth proportional to 415,189.58, 620,509.22 and 303,105.83 is: 452,997.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,189.58 : 620,509.22 = 303,105.83 : x
  2. Step 2: Convert to fraction form
    415,189.58/620,509.22 = 303,105.83/x
  3. Step 3: Cross multiply
    415,189.58x = 620,509.22 × 303,105.83
  4. Step 4: Simplify right side
    415,189.58x = 188,079,957,532.68
  5. Step 5: Solve for x
    x = 188,079,957,532.68/415,189.58
  6. Step 6: Final answer
    x = 452,997.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.