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Finding the Fourth Proportional to 221,068.98, 331,668.06 and 71,305.96

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Solution

The fourth proportional to 221,068.98, 331,668.06 and 71,305.96 is: 106,979.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,068.98 : 331,668.06 = 71,305.96 : x
  2. Step 2: Convert to fraction form
    221,068.98/331,668.06 = 71,305.96/x
  3. Step 3: Cross multiply
    221,068.98x = 331,668.06 × 71,305.96
  4. Step 4: Simplify right side
    221,068.98x = 23,649,907,834.89
  5. Step 5: Solve for x
    x = 23,649,907,834.89/221,068.98
  6. Step 6: Final answer
    x = 106,979.77

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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.