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Finding the Fourth Proportional to 251,040.60, 376,442.10 and 145,891.80

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Solution

The fourth proportional to 251,040.60, 376,442.10 and 145,891.80 is: 218,768.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,040.60 : 376,442.10 = 145,891.80 : x
  2. Step 2: Convert to fraction form
    251,040.60/376,442.10 = 145,891.80/x
  3. Step 3: Cross multiply
    251,040.60x = 376,442.10 × 145,891.80
  4. Step 4: Simplify right side
    251,040.60x = 54,919,815,564.78
  5. Step 5: Solve for x
    x = 54,919,815,564.78/251,040.60
  6. Step 6: Final answer
    x = 218,768.66

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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.