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Finding the Fourth Proportional to 243,339.26, 335,804.60 and 135,910.78

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Solution

The fourth proportional to 243,339.26, 335,804.60 and 135,910.78 is: 187,554.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,339.26 : 335,804.60 = 135,910.78 : x
  2. Step 2: Convert to fraction form
    243,339.26/335,804.60 = 135,910.78/x
  3. Step 3: Cross multiply
    243,339.26x = 335,804.60 × 135,910.78
  4. Step 4: Simplify right side
    243,339.26x = 45,639,464,613.85
  5. Step 5: Solve for x
    x = 45,639,464,613.85/243,339.26
  6. Step 6: Final answer
    x = 187,554.88

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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.