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Finding the Fourth Proportional to 245,396.68, 368,099.67 and 76,913.28

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Solution

The fourth proportional to 245,396.68, 368,099.67 and 76,913.28 is: 115,371.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,396.68 : 368,099.67 = 76,913.28 : x
  2. Step 2: Convert to fraction form
    245,396.68/368,099.67 = 76,913.28/x
  3. Step 3: Cross multiply
    245,396.68x = 368,099.67 × 76,913.28
  4. Step 4: Simplify right side
    245,396.68x = 28,311,752,986.62
  5. Step 5: Solve for x
    x = 28,311,752,986.62/245,396.68
  6. Step 6: Final answer
    x = 115,371.38

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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.