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Finding the Fourth Proportional to 222,364.70, 306,863.49 and 120,390.23

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Solution

The fourth proportional to 222,364.70, 306,863.49 and 120,390.23 is: 166,138.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,364.70 : 306,863.49 = 120,390.23 : x
  2. Step 2: Convert to fraction form
    222,364.70/306,863.49 = 120,390.23/x
  3. Step 3: Cross multiply
    222,364.70x = 306,863.49 × 120,390.23
  4. Step 4: Simplify right side
    222,364.70x = 36,943,366,139.70
  5. Step 5: Solve for x
    x = 36,943,366,139.70/222,364.70
  6. Step 6: Final answer
    x = 166,138.63

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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.