Home / 222,359.76-306,856.53-120,385.20

Finding the Fourth Proportional to 222,359.76, 306,856.53 and 120,385.20

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Solution

The fourth proportional to 222,359.76, 306,856.53 and 120,385.20 is: 166,131.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,359.76 : 306,856.53 = 120,385.20 : x
  2. Step 2: Convert to fraction form
    222,359.76/306,856.53 = 120,385.20/x
  3. Step 3: Cross multiply
    222,359.76x = 306,856.53 × 120,385.20
  4. Step 4: Simplify right side
    222,359.76x = 36,940,984,735.36
  5. Step 5: Solve for x
    x = 36,940,984,735.36/222,359.76
  6. Step 6: Final answer
    x = 166,131.61

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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.