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Finding the Fourth Proportional to 275,603.21, 379,544.90 and 248,145.42

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Solution

The fourth proportional to 275,603.21, 379,544.90 and 248,145.42 is: 341,731.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,603.21 : 379,544.90 = 248,145.42 : x
  2. Step 2: Convert to fraction form
    275,603.21/379,544.90 = 248,145.42/x
  3. Step 3: Cross multiply
    275,603.21x = 379,544.90 × 248,145.42
  4. Step 4: Simplify right side
    275,603.21x = 94,182,327,378.63
  5. Step 5: Solve for x
    x = 94,182,327,378.63/275,603.21
  6. Step 6: Final answer
    x = 341,731.61

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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.