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Finding the Fourth Proportional to 316,361.92, 436,579.52 and 173,122

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Solution

The fourth proportional to 316,361.92, 436,579.52 and 173,122 is: 238,908.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,361.92 : 436,579.52 = 173,122 : x
  2. Step 2: Convert to fraction form
    316,361.92/436,579.52 = 173,122/x
  3. Step 3: Cross multiply
    316,361.92x = 436,579.52 × 173,122
  4. Step 4: Simplify right side
    316,361.92x = 75,581,519,661.44
  5. Step 5: Solve for x
    x = 75,581,519,661.44/316,361.92
  6. Step 6: Final answer
    x = 238,908.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.