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Finding the Fourth Proportional to 415,164.37, 620,471.81 and 303,080.61

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Solution

The fourth proportional to 415,164.37, 620,471.81 and 303,080.61 is: 452,960.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,164.37 : 620,471.81 = 303,080.61 : x
  2. Step 2: Convert to fraction form
    415,164.37/620,471.81 = 303,080.61/x
  3. Step 3: Cross multiply
    415,164.37x = 620,471.81 × 303,080.61
  4. Step 4: Simplify right side
    415,164.37x = 188,052,974,662.60
  5. Step 5: Solve for x
    x = 188,052,974,662.60/415,164.37
  6. Step 6: Final answer
    x = 452,960.29

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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.