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Finding the Fourth Proportional to 235,896.80, 325,539.68 and 128,467.32

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Solution

The fourth proportional to 235,896.80, 325,539.68 and 128,467.32 is: 177,286.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,896.80 : 325,539.68 = 128,467.32 : x
  2. Step 2: Convert to fraction form
    235,896.80/325,539.68 = 128,467.32/x
  3. Step 3: Cross multiply
    235,896.80x = 325,539.68 × 128,467.32
  4. Step 4: Simplify right side
    235,896.80x = 41,821,210,243.26
  5. Step 5: Solve for x
    x = 41,821,210,243.26/235,896.80
  6. Step 6: Final answer
    x = 177,286.04

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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.