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Finding the Fourth Proportional to 235,719.91, 325,300.62 and 128,297.71

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Solution

The fourth proportional to 235,719.91, 325,300.62 and 128,297.71 is: 177,054.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,719.91 : 325,300.62 = 128,297.71 : x
  2. Step 2: Convert to fraction form
    235,719.91/325,300.62 = 128,297.71/x
  3. Step 3: Cross multiply
    235,719.91x = 325,300.62 × 128,297.71
  4. Step 4: Simplify right side
    235,719.91x = 41,735,324,607.58
  5. Step 5: Solve for x
    x = 41,735,324,607.58/235,719.91
  6. Step 6: Final answer
    x = 177,054.73

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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.