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Finding the Fourth Proportional to 216,760.88, 325,199.76 and 90,359.12

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Solution

The fourth proportional to 216,760.88, 325,199.76 and 90,359.12 is: 135,563.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,760.88 : 325,199.76 = 90,359.12 : x
  2. Step 2: Convert to fraction form
    216,760.88/325,199.76 = 90,359.12/x
  3. Step 3: Cross multiply
    216,760.88x = 325,199.76 × 90,359.12
  4. Step 4: Simplify right side
    216,760.88x = 29,384,764,137.81
  5. Step 5: Solve for x
    x = 29,384,764,137.81/216,760.88
  6. Step 6: Final answer
    x = 135,563.04

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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.