Home / 206,474.64-309,682.80-66,215.04

Finding the Fourth Proportional to 206,474.64, 309,682.80 and 66,215.04

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Solution

The fourth proportional to 206,474.64, 309,682.80 and 66,215.04 is: 99,313.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,474.64 : 309,682.80 = 66,215.04 : x
  2. Step 2: Convert to fraction form
    206,474.64/309,682.80 = 66,215.04/x
  3. Step 3: Cross multiply
    206,474.64x = 309,682.80 × 66,215.04
  4. Step 4: Simplify right side
    206,474.64x = 20,505,658,989.31
  5. Step 5: Solve for x
    x = 20,505,658,989.31/206,474.64
  6. Step 6: Final answer
    x = 99,313.21

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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.