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Finding the Fourth Proportional to 222,293.76, 306,765.40 and 121,691.76

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Solution

The fourth proportional to 222,293.76, 306,765.40 and 121,691.76 is: 167,934.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,293.76 : 306,765.40 = 121,691.76 : x
  2. Step 2: Convert to fraction form
    222,293.76/306,765.40 = 121,691.76/x
  3. Step 3: Cross multiply
    222,293.76x = 306,765.40 × 121,691.76
  4. Step 4: Simplify right side
    222,293.76x = 37,330,821,433.10
  5. Step 5: Solve for x
    x = 37,330,821,433.10/222,293.76
  6. Step 6: Final answer
    x = 167,934.63

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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.