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Finding the Fourth Proportional to 245,198.88, 367,720.56 and 78,948

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Solution

The fourth proportional to 245,198.88, 367,720.56 and 78,948 is: 118,396.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,198.88 : 367,720.56 = 78,948 : x
  2. Step 2: Convert to fraction form
    245,198.88/367,720.56 = 78,948/x
  3. Step 3: Cross multiply
    245,198.88x = 367,720.56 × 78,948
  4. Step 4: Simplify right side
    245,198.88x = 29,030,802,770.88
  5. Step 5: Solve for x
    x = 29,030,802,770.88/245,198.88
  6. Step 6: Final answer
    x = 118,396.96

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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.