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Finding the Fourth Proportional to 251,124.78, 376,701.21 and 80,361.39

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Solution

The fourth proportional to 251,124.78, 376,701.21 and 80,361.39 is: 120,546.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,124.78 : 376,701.21 = 80,361.39 : x
  2. Step 2: Convert to fraction form
    251,124.78/376,701.21 = 80,361.39/x
  3. Step 3: Cross multiply
    251,124.78x = 376,701.21 × 80,361.39
  4. Step 4: Simplify right side
    251,124.78x = 30,272,232,850.28
  5. Step 5: Solve for x
    x = 30,272,232,850.28/251,124.78
  6. Step 6: Final answer
    x = 120,546.58

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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.