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Finding the Fourth Proportional to 220,901.86, 331,343.54 and 71,138.84

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Solution

The fourth proportional to 220,901.86, 331,343.54 and 71,138.84 is: 106,705.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,901.86 : 331,343.54 = 71,138.84 : x
  2. Step 2: Convert to fraction form
    220,901.86/331,343.54 = 71,138.84/x
  3. Step 3: Cross multiply
    220,901.86x = 331,343.54 × 71,138.84
  4. Step 4: Simplify right side
    220,901.86x = 23,571,393,064.68
  5. Step 5: Solve for x
    x = 23,571,393,064.68/220,901.86
  6. Step 6: Final answer
    x = 106,705.27

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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.