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Finding the Fourth Proportional to 236,359.39, 326,175.42 and 128,929.42

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Solution

The fourth proportional to 236,359.39, 326,175.42 and 128,929.42 is: 177,922.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,359.39 : 326,175.42 = 128,929.42 : x
  2. Step 2: Convert to fraction form
    236,359.39/326,175.42 = 128,929.42/x
  3. Step 3: Cross multiply
    236,359.39x = 326,175.42 × 128,929.42
  4. Step 4: Simplify right side
    236,359.39x = 42,053,606,419.93
  5. Step 5: Solve for x
    x = 42,053,606,419.93/236,359.39
  6. Step 6: Final answer
    x = 177,922.30

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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.