Home / 221,510.27-305,684.61-120,908.27

Finding the Fourth Proportional to 221,510.27, 305,684.61 and 120,908.27

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Solution

The fourth proportional to 221,510.27, 305,684.61 and 120,908.27 is: 166,853.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,510.27 : 305,684.61 = 120,908.27 : x
  2. Step 2: Convert to fraction form
    221,510.27/305,684.61 = 120,908.27/x
  3. Step 3: Cross multiply
    221,510.27x = 305,684.61 × 120,908.27
  4. Step 4: Simplify right side
    221,510.27x = 36,959,797,360.72
  5. Step 5: Solve for x
    x = 36,959,797,360.72/221,510.27
  6. Step 6: Final answer
    x = 166,853.65

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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.