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Finding the Fourth Proportional to 220,035.94, 330,053.89 and 120,141.63

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Solution

The fourth proportional to 220,035.94, 330,053.89 and 120,141.63 is: 180,212.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,035.94 : 330,053.89 = 120,141.63 : x
  2. Step 2: Convert to fraction form
    220,035.94/330,053.89 = 120,141.63/x
  3. Step 3: Cross multiply
    220,035.94x = 330,053.89 × 120,141.63
  4. Step 4: Simplify right side
    220,035.94x = 39,653,212,332.44
  5. Step 5: Solve for x
    x = 39,653,212,332.44/220,035.94
  6. Step 6: Final answer
    x = 180,212.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.