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Finding the Fourth Proportional to 235,733.52, 325,319.15 and 128,310.51

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Solution

The fourth proportional to 235,733.52, 325,319.15 and 128,310.51 is: 177,072.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,733.52 : 325,319.15 = 128,310.51 : x
  2. Step 2: Convert to fraction form
    235,733.52/325,319.15 = 128,310.51/x
  3. Step 3: Cross multiply
    235,733.52x = 325,319.15 × 128,310.51
  4. Step 4: Simplify right side
    235,733.52x = 41,741,866,370.04
  5. Step 5: Solve for x
    x = 41,741,866,370.04/235,733.52
  6. Step 6: Final answer
    x = 177,072.26

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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.