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Finding the Fourth Proportional to 222,164.75, 306,587.56 and 121,562.75

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Solution

The fourth proportional to 222,164.75, 306,587.56 and 121,562.75 is: 167,756.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,164.75 : 306,587.56 = 121,562.75 : x
  2. Step 2: Convert to fraction form
    222,164.75/306,587.56 = 121,562.75/x
  3. Step 3: Cross multiply
    222,164.75x = 306,587.56 × 121,562.75
  4. Step 4: Simplify right side
    222,164.75x = 37,269,626,909.39
  5. Step 5: Solve for x
    x = 37,269,626,909.39/222,164.75
  6. Step 6: Final answer
    x = 167,756.71

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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.