Home / 221,311.71-305,398.76-120,690.27

Finding the Fourth Proportional to 221,311.71, 305,398.76 and 120,690.27

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Solution

The fourth proportional to 221,311.71, 305,398.76 and 120,690.27 is: 166,546.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,311.71 : 305,398.76 = 120,690.27 : x
  2. Step 2: Convert to fraction form
    221,311.71/305,398.76 = 120,690.27/x
  3. Step 3: Cross multiply
    221,311.71x = 305,398.76 × 120,690.27
  4. Step 4: Simplify right side
    221,311.71x = 36,858,658,198.61
  5. Step 5: Solve for x
    x = 36,858,658,198.61/221,311.71
  6. Step 6: Final answer
    x = 166,546.35

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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.