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Finding the Fourth Proportional to 243,310.93, 335,745.09 and 135,878.65

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Solution

The fourth proportional to 243,310.93, 335,745.09 and 135,878.65 is: 187,499.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,310.93 : 335,745.09 = 135,878.65 : x
  2. Step 2: Convert to fraction form
    243,310.93/335,745.09 = 135,878.65/x
  3. Step 3: Cross multiply
    243,310.93x = 335,745.09 × 135,878.65
  4. Step 4: Simplify right side
    243,310.93x = 45,620,589,573.33
  5. Step 5: Solve for x
    x = 45,620,589,573.33/243,310.93
  6. Step 6: Final answer
    x = 187,499.14

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1.5x scale

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.