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Finding the Fourth Proportional to 221,630.40, 332,553.60 and 103,240.80

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Solution

The fourth proportional to 221,630.40, 332,553.60 and 103,240.80 is: 154,911.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,630.40 : 332,553.60 = 103,240.80 : x
  2. Step 2: Convert to fraction form
    221,630.40/332,553.60 = 103,240.80/x
  3. Step 3: Cross multiply
    221,630.40x = 332,553.60 × 103,240.80
  4. Step 4: Simplify right side
    221,630.40x = 34,333,099,706.88
  5. Step 5: Solve for x
    x = 34,333,099,706.88/221,630.40
  6. Step 6: Final answer
    x = 154,911.51

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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.