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Finding the Fourth Proportional to 222,339.38, 306,858.94 and 136,349.78

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Solution

The fourth proportional to 222,339.38, 306,858.94 and 136,349.78 is: 188,181.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,339.38 : 306,858.94 = 136,349.78 : x
  2. Step 2: Convert to fraction form
    222,339.38/306,858.94 = 136,349.78/x
  3. Step 3: Cross multiply
    222,339.38x = 306,858.94 × 136,349.78
  4. Step 4: Simplify right side
    222,339.38x = 41,840,148,960.03
  5. Step 5: Solve for x
    x = 41,840,148,960.03/222,339.38
  6. Step 6: Final answer
    x = 188,181.46

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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.