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Finding the Fourth Proportional to 220,772.71, 331,208.45 and 80,531.34

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Solution

The fourth proportional to 220,772.71, 331,208.45 and 80,531.34 is: 120,815.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,772.71 : 331,208.45 = 80,531.34 : x
  2. Step 2: Convert to fraction form
    220,772.71/331,208.45 = 80,531.34/x
  3. Step 3: Cross multiply
    220,772.71x = 331,208.45 × 80,531.34
  4. Step 4: Simplify right side
    220,772.71x = 26,672,660,297.82
  5. Step 5: Solve for x
    x = 26,672,660,297.82/220,772.71
  6. Step 6: Final answer
    x = 120,815.02

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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.