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Finding the Fourth Proportional to 235,768.37, 325,367.64 and 128,345.54

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Solution

The fourth proportional to 235,768.37, 325,367.64 and 128,345.54 is: 177,120.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,768.37 : 325,367.64 = 128,345.54 : x
  2. Step 2: Convert to fraction form
    235,768.37/325,367.64 = 128,345.54/x
  3. Step 3: Cross multiply
    235,768.37x = 325,367.64 × 128,345.54
  4. Step 4: Simplify right side
    235,768.37x = 41,759,483,827.49
  5. Step 5: Solve for x
    x = 41,759,483,827.49/235,768.37
  6. Step 6: Final answer
    x = 177,120.81

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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.