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Finding the Fourth Proportional to 222,287.75, 306,757.10 and 121,685.75

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Solution

The fourth proportional to 222,287.75, 306,757.10 and 121,685.75 is: 167,926.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,287.75 : 306,757.10 = 121,685.75 : x
  2. Step 2: Convert to fraction form
    222,287.75/306,757.10 = 121,685.75/x
  3. Step 3: Cross multiply
    222,287.75x = 306,757.10 × 121,685.75
  4. Step 4: Simplify right side
    222,287.75x = 37,327,967,172.90
  5. Step 5: Solve for x
    x = 37,327,967,172.90/222,287.75
  6. Step 6: Final answer
    x = 167,926.34

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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.