Home / 222,185.66-306,615.36-120,210.78

Finding the Fourth Proportional to 222,185.66, 306,615.36 and 120,210.78

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Solution

The fourth proportional to 222,185.66, 306,615.36 and 120,210.78 is: 165,890.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,185.66 : 306,615.36 = 120,210.78 : x
  2. Step 2: Convert to fraction form
    222,185.66/306,615.36 = 120,210.78/x
  3. Step 3: Cross multiply
    222,185.66x = 306,615.36 × 120,210.78
  4. Step 4: Simplify right side
    222,185.66x = 36,858,471,585.58
  5. Step 5: Solve for x
    x = 36,858,471,585.58/222,185.66
  6. Step 6: Final answer
    x = 165,890.42

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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.