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Finding the Fourth Proportional to 392,621.60, 541,820.40 and 222,858.56

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Solution

The fourth proportional to 392,621.60, 541,820.40 and 222,858.56 is: 307,546.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,621.60 : 541,820.40 = 222,858.56 : x
  2. Step 2: Convert to fraction form
    392,621.60/541,820.40 = 222,858.56/x
  3. Step 3: Cross multiply
    392,621.60x = 541,820.40 × 222,858.56
  4. Step 4: Simplify right side
    392,621.60x = 120,749,314,122.62
  5. Step 5: Solve for x
    x = 120,749,314,122.62/392,621.60
  6. Step 6: Final answer
    x = 307,546.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.