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Finding the Fourth Proportional to 235,748.96, 325,340.48 and 128,326

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Solution

The fourth proportional to 235,748.96, 325,340.48 and 128,326 is: 177,093.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,748.96 : 325,340.48 = 128,326 : x
  2. Step 2: Convert to fraction form
    235,748.96/325,340.48 = 128,326/x
  3. Step 3: Cross multiply
    235,748.96x = 325,340.48 × 128,326
  4. Step 4: Simplify right side
    235,748.96x = 41,749,642,436.48
  5. Step 5: Solve for x
    x = 41,749,642,436.48/235,748.96
  6. Step 6: Final answer
    x = 177,093.64

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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.