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Finding the Fourth Proportional to 221,329.52, 305,434.20 and 120,727.52

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Solution

The fourth proportional to 221,329.52, 305,434.20 and 120,727.52 is: 166,603.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,329.52 : 305,434.20 = 120,727.52 : x
  2. Step 2: Convert to fraction form
    221,329.52/305,434.20 = 120,727.52/x
  3. Step 3: Cross multiply
    221,329.52x = 305,434.20 × 120,727.52
  4. Step 4: Simplify right side
    221,329.52x = 36,874,313,489.18
  5. Step 5: Solve for x
    x = 36,874,313,489.18/221,329.52
  6. Step 6: Final answer
    x = 166,603.68

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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.