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Finding the Fourth Proportional to 222,361.70, 306,859.34 and 120,387.22

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Solution

The fourth proportional to 222,361.70, 306,859.34 and 120,387.22 is: 166,134.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,361.70 : 306,859.34 = 120,387.22 : x
  2. Step 2: Convert to fraction form
    222,361.70/306,859.34 = 120,387.22/x
  3. Step 3: Cross multiply
    222,361.70x = 306,859.34 × 120,387.22
  4. Step 4: Simplify right side
    222,361.70x = 36,941,942,873.63
  5. Step 5: Solve for x
    x = 36,941,942,873.63/222,361.70
  6. Step 6: Final answer
    x = 166,134.47

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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.