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Finding the Fourth Proportional to 293,790, 405,554.22 and 198,425.87

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Solution

The fourth proportional to 293,790, 405,554.22 and 198,425.87 is: 273,911.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,790 : 405,554.22 = 198,425.87 : x
  2. Step 2: Convert to fraction form
    293,790/405,554.22 = 198,425.87/x
  3. Step 3: Cross multiply
    293,790x = 405,554.22 × 198,425.87
  4. Step 4: Simplify right side
    293,790x = 80,472,446,907.90
  5. Step 5: Solve for x
    x = 80,472,446,907.90/293,790
  6. Step 6: Final answer
    x = 273,911.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.