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Finding the Fourth Proportional to 220,222.70, 330,383.28 and 70,471.98

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Solution

The fourth proportional to 220,222.70, 330,383.28 and 70,471.98 is: 105,723.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,222.70 : 330,383.28 = 70,471.98 : x
  2. Step 2: Convert to fraction form
    220,222.70/330,383.28 = 70,471.98/x
  3. Step 3: Cross multiply
    220,222.70x = 330,383.28 × 70,471.98
  4. Step 4: Simplify right side
    220,222.70x = 23,282,763,900.49
  5. Step 5: Solve for x
    x = 23,282,763,900.49/220,222.70
  6. Step 6: Final answer
    x = 105,723.72

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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.