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Finding the Fourth Proportional to 222,364.58, 306,863.31 and 120,390.11

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Solution

The fourth proportional to 222,364.58, 306,863.31 and 120,390.11 is: 166,138.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,364.58 : 306,863.31 = 120,390.11 : x
  2. Step 2: Convert to fraction form
    222,364.58/306,863.31 = 120,390.11/x
  3. Step 3: Cross multiply
    222,364.58x = 306,863.31 × 120,390.11
  4. Step 4: Simplify right side
    222,364.58x = 36,943,306,111.55
  5. Step 5: Solve for x
    x = 36,943,306,111.55/222,364.58
  6. Step 6: Final answer
    x = 166,138.45

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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.