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Finding the Fourth Proportional to 222,361.37, 306,858.79 and 120,386.83

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Solution

The fourth proportional to 222,361.37, 306,858.79 and 120,386.83 is: 166,133.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,361.37 : 306,858.79 = 120,386.83 : x
  2. Step 2: Convert to fraction form
    222,361.37/306,858.79 = 120,386.83/x
  3. Step 3: Cross multiply
    222,361.37x = 306,858.79 × 120,386.83
  4. Step 4: Simplify right side
    222,361.37x = 36,941,756,985.74
  5. Step 5: Solve for x
    x = 36,941,756,985.74/222,361.37
  6. Step 6: Final answer
    x = 166,133.88

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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.