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Finding the Fourth Proportional to 636,716.30, 954,745.79 and 187,378.82

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Solution

The fourth proportional to 636,716.30, 954,745.79 and 187,378.82 is: 280,971.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,716.30 : 954,745.79 = 187,378.82 : x
  2. Step 2: Convert to fraction form
    636,716.30/954,745.79 = 187,378.82/x
  3. Step 3: Cross multiply
    636,716.30x = 954,745.79 × 187,378.82
  4. Step 4: Simplify right side
    636,716.30x = 178,899,137,399.84
  5. Step 5: Solve for x
    x = 178,899,137,399.84/636,716.30
  6. Step 6: Final answer
    x = 280,971.51

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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.