Home / 221,226.12-305,289-120,624.12

Finding the Fourth Proportional to 221,226.12, 305,289 and 120,624.12

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Solution

The fourth proportional to 221,226.12, 305,289 and 120,624.12 is: 166,459.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,226.12 : 305,289 = 120,624.12 : x
  2. Step 2: Convert to fraction form
    221,226.12/305,289 = 120,624.12/x
  3. Step 3: Cross multiply
    221,226.12x = 305,289 × 120,624.12
  4. Step 4: Simplify right side
    221,226.12x = 36,825,216,970.68
  5. Step 5: Solve for x
    x = 36,825,216,970.68/221,226.12
  6. Step 6: Final answer
    x = 166,459.62

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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.