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Finding the Fourth Proportional to 219,751.87, 331,274.86 and 205,104.31

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Solution

The fourth proportional to 219,751.87, 331,274.86 and 205,104.31 is: 309,193.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,751.87 : 331,274.86 = 205,104.31 : x
  2. Step 2: Convert to fraction form
    219,751.87/331,274.86 = 205,104.31/x
  3. Step 3: Cross multiply
    219,751.87x = 331,274.86 × 205,104.31
  4. Step 4: Simplify right side
    219,751.87x = 67,945,903,256.83
  5. Step 5: Solve for x
    x = 67,945,903,256.83/219,751.87
  6. Step 6: Final answer
    x = 309,193.74

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.