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Finding the Fourth Proportional to 216,507.02, 324,790.59 and 66,759.08

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Solution

The fourth proportional to 216,507.02, 324,790.59 and 66,759.08 is: 100,147.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,507.02 : 324,790.59 = 66,759.08 : x
  2. Step 2: Convert to fraction form
    216,507.02/324,790.59 = 66,759.08/x
  3. Step 3: Cross multiply
    216,507.02x = 324,790.59 × 66,759.08
  4. Step 4: Simplify right side
    216,507.02x = 21,682,719,023.31
  5. Step 5: Solve for x
    x = 21,682,719,023.31/216,507.02
  6. Step 6: Final answer
    x = 100,147.88

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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.