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Finding the Fourth Proportional to 220,223.21, 330,384.03 and 70,472.48

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Solution

The fourth proportional to 220,223.21, 330,384.03 and 70,472.48 is: 105,724.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,223.21 : 330,384.03 = 70,472.48 : x
  2. Step 2: Convert to fraction form
    220,223.21/330,384.03 = 70,472.48/x
  3. Step 3: Cross multiply
    220,223.21x = 330,384.03 × 70,472.48
  4. Step 4: Simplify right side
    220,223.21x = 23,282,982,772.45
  5. Step 5: Solve for x
    x = 23,282,982,772.45/220,223.21
  6. Step 6: Final answer
    x = 105,724.48

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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.