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Finding the Fourth Proportional to 221,159.34, 331,706.34 and 108,809.37

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Solution

The fourth proportional to 221,159.34, 331,706.34 and 108,809.37 is: 163,197.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,159.34 : 331,706.34 = 108,809.37 : x
  2. Step 2: Convert to fraction form
    221,159.34/331,706.34 = 108,809.37/x
  3. Step 3: Cross multiply
    221,159.34x = 331,706.34 × 108,809.37
  4. Step 4: Simplify right side
    221,159.34x = 36,092,757,880.41
  5. Step 5: Solve for x
    x = 36,092,757,880.41/221,159.34
  6. Step 6: Final answer
    x = 163,197.98

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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.