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Finding the Fourth Proportional to 259,940.97, 389,024.28 and 217,868.58

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Solution

The fourth proportional to 259,940.97, 389,024.28 and 217,868.58 is: 326,059.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,940.97 : 389,024.28 = 217,868.58 : x
  2. Step 2: Convert to fraction form
    259,940.97/389,024.28 = 217,868.58/x
  3. Step 3: Cross multiply
    259,940.97x = 389,024.28 × 217,868.58
  4. Step 4: Simplify right side
    259,940.97x = 84,756,167,469.12
  5. Step 5: Solve for x
    x = 84,756,167,469.12/259,940.97
  6. Step 6: Final answer
    x = 326,059.29

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1.5x scale

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.