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Finding the Fourth Proportional to 222,422.34, 306,942.84 and 121,820.34

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Solution

The fourth proportional to 222,422.34, 306,942.84 and 121,820.34 is: 168,112.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,422.34 : 306,942.84 = 121,820.34 : x
  2. Step 2: Convert to fraction form
    222,422.34/306,942.84 = 121,820.34/x
  3. Step 3: Cross multiply
    222,422.34x = 306,942.84 × 121,820.34
  4. Step 4: Simplify right side
    222,422.34x = 37,391,881,129.37
  5. Step 5: Solve for x
    x = 37,391,881,129.37/222,422.34
  6. Step 6: Final answer
    x = 168,112.08

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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.