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Finding the Fourth Proportional to 222,086.12, 306,478.82 and 121,483.88

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Solution

The fourth proportional to 222,086.12, 306,478.82 and 121,483.88 is: 167,647.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,086.12 : 306,478.82 = 121,483.88 : x
  2. Step 2: Convert to fraction form
    222,086.12/306,478.82 = 121,483.88/x
  3. Step 3: Cross multiply
    222,086.12x = 306,478.82 × 121,483.88
  4. Step 4: Simplify right side
    222,086.12x = 37,232,236,191.42
  5. Step 5: Solve for x
    x = 37,232,236,191.42/222,086.12
  6. Step 6: Final answer
    x = 167,647.74

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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.