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Finding the Fourth Proportional to 275,397.87, 379,745.51 and 190,367.31

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Solution

The fourth proportional to 275,397.87, 379,745.51 and 190,367.31 is: 262,497.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,397.87 : 379,745.51 = 190,367.31 : x
  2. Step 2: Convert to fraction form
    275,397.87/379,745.51 = 190,367.31/x
  3. Step 3: Cross multiply
    275,397.87x = 379,745.51 × 190,367.31
  4. Step 4: Simplify right side
    275,397.87x = 72,291,130,271.44
  5. Step 5: Solve for x
    x = 72,291,130,271.44/275,397.87
  6. Step 6: Final answer
    x = 262,497.06

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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.