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Finding the Fourth Proportional to 617,143.64, 925,825.26 and 218,015.96

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Solution

The fourth proportional to 617,143.64, 925,825.26 and 218,015.96 is: 327,062.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,143.64 : 925,825.26 = 218,015.96 : x
  2. Step 2: Convert to fraction form
    617,143.64/925,825.26 = 218,015.96/x
  3. Step 3: Cross multiply
    617,143.64x = 925,825.26 × 218,015.96
  4. Step 4: Simplify right side
    617,143.64x = 201,844,682,851.15
  5. Step 5: Solve for x
    x = 201,844,682,851.15/617,143.64
  6. Step 6: Final answer
    x = 327,062.73

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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.