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Finding the Fourth Proportional to 316,517.56, 436,804.08 and 173,290.96

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Solution

The fourth proportional to 316,517.56, 436,804.08 and 173,290.96 is: 239,146.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,517.56 : 436,804.08 = 173,290.96 : x
  2. Step 2: Convert to fraction form
    316,517.56/436,804.08 = 173,290.96/x
  3. Step 3: Cross multiply
    316,517.56x = 436,804.08 × 173,290.96
  4. Step 4: Simplify right side
    316,517.56x = 75,694,198,355.12
  5. Step 5: Solve for x
    x = 75,694,198,355.12/316,517.56
  6. Step 6: Final answer
    x = 239,146.92

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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.