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Finding the Fourth Proportional to 336,987.31, 505,348.72 and 137,235.62

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Solution

The fourth proportional to 336,987.31, 505,348.72 and 137,235.62 is: 205,799.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,987.31 : 505,348.72 = 137,235.62 : x
  2. Step 2: Convert to fraction form
    336,987.31/505,348.72 = 137,235.62/x
  3. Step 3: Cross multiply
    336,987.31x = 505,348.72 × 137,235.62
  4. Step 4: Simplify right side
    336,987.31x = 69,351,843,755.05
  5. Step 5: Solve for x
    x = 69,351,843,755.05/336,987.31
  6. Step 6: Final answer
    x = 205,799.57

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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.