Home / 220,256.82-330,280.61-85,383.99

Finding the Fourth Proportional to 220,256.82, 330,280.61 and 85,383.99

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Solution

The fourth proportional to 220,256.82, 330,280.61 and 85,383.99 is: 128,035.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,256.82 : 330,280.61 = 85,383.99 : x
  2. Step 2: Convert to fraction form
    220,256.82/330,280.61 = 85,383.99/x
  3. Step 3: Cross multiply
    220,256.82x = 330,280.61 × 85,383.99
  4. Step 4: Simplify right side
    220,256.82x = 28,200,675,874.51
  5. Step 5: Solve for x
    x = 28,200,675,874.51/220,256.82
  6. Step 6: Final answer
    x = 128,035.43

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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.