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Finding the Fourth Proportional to 216,761.38, 325,200.51 and 90,359.62

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Solution

The fourth proportional to 216,761.38, 325,200.51 and 90,359.62 is: 135,563.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,761.38 : 325,200.51 = 90,359.62 : x
  2. Step 2: Convert to fraction form
    216,761.38/325,200.51 = 90,359.62/x
  3. Step 3: Cross multiply
    216,761.38x = 325,200.51 × 90,359.62
  4. Step 4: Simplify right side
    216,761.38x = 29,384,994,507.41
  5. Step 5: Solve for x
    x = 29,384,994,507.41/216,761.38
  6. Step 6: Final answer
    x = 135,563.79

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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.