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Finding the Fourth Proportional to 386,924.91, 579,862.43 and 218,361.88

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Solution

The fourth proportional to 386,924.91, 579,862.43 and 218,361.88 is: 327,246.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,924.91 : 579,862.43 = 218,361.88 : x
  2. Step 2: Convert to fraction form
    386,924.91/579,862.43 = 218,361.88/x
  3. Step 3: Cross multiply
    386,924.91x = 579,862.43 × 218,361.88
  4. Step 4: Simplify right side
    386,924.91x = 126,619,850,356.17
  5. Step 5: Solve for x
    x = 126,619,850,356.17/386,924.91
  6. Step 6: Final answer
    x = 327,246.57

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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.