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Finding the Fourth Proportional to 222,002.75, 306,363.80 and 121,400.75

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Solution

The fourth proportional to 222,002.75, 306,363.80 and 121,400.75 is: 167,533.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,002.75 : 306,363.80 = 121,400.75 : x
  2. Step 2: Convert to fraction form
    222,002.75/306,363.80 = 121,400.75/x
  3. Step 3: Cross multiply
    222,002.75x = 306,363.80 × 121,400.75
  4. Step 4: Simplify right side
    222,002.75x = 37,192,795,092.85
  5. Step 5: Solve for x
    x = 37,192,795,092.85/222,002.75
  6. Step 6: Final answer
    x = 167,533.04

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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.