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Finding the Fourth Proportional to 216,936, 325,409.76 and 69,192

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Solution

The fourth proportional to 216,936, 325,409.76 and 69,192 is: 103,789.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,936 : 325,409.76 = 69,192 : x
  2. Step 2: Convert to fraction form
    216,936/325,409.76 = 69,192/x
  3. Step 3: Cross multiply
    216,936x = 325,409.76 × 69,192
  4. Step 4: Simplify right side
    216,936x = 22,515,752,113.92
  5. Step 5: Solve for x
    x = 22,515,752,113.92/216,936
  6. Step 6: Final answer
    x = 103,789.84

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.