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Finding the Fourth Proportional to 235,662.91, 325,213.29 and 128,233.36

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Solution

The fourth proportional to 235,662.91, 325,213.29 and 128,233.36 is: 176,961.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,662.91 : 325,213.29 = 128,233.36 : x
  2. Step 2: Convert to fraction form
    235,662.91/325,213.29 = 128,233.36/x
  3. Step 3: Cross multiply
    235,662.91x = 325,213.29 × 128,233.36
  4. Step 4: Simplify right side
    235,662.91x = 41,703,192,893.35
  5. Step 5: Solve for x
    x = 41,703,192,893.35/235,662.91
  6. Step 6: Final answer
    x = 176,961.21

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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.