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Finding the Fourth Proportional to 216,449.15, 324,745.70 and 136,394.61

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Solution

The fourth proportional to 216,449.15, 324,745.70 and 136,394.61 is: 204,637.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,449.15 : 324,745.70 = 136,394.61 : x
  2. Step 2: Convert to fraction form
    216,449.15/324,745.70 = 136,394.61/x
  3. Step 3: Cross multiply
    216,449.15x = 324,745.70 × 136,394.61
  4. Step 4: Simplify right side
    216,449.15x = 44,293,562,418.70
  5. Step 5: Solve for x
    x = 44,293,562,418.70/216,449.15
  6. Step 6: Final answer
    x = 204,637.27

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1.5x scale

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.