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Finding the Fourth Proportional to 229,138.44, 343,625.65 and 79,338.51

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Solution

The fourth proportional to 229,138.44, 343,625.65 and 79,338.51 is: 118,979.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,138.44 : 343,625.65 = 79,338.51 : x
  2. Step 2: Convert to fraction form
    229,138.44/343,625.65 = 79,338.51/x
  3. Step 3: Cross multiply
    229,138.44x = 343,625.65 × 79,338.51
  4. Step 4: Simplify right side
    229,138.44x = 27,262,746,870.44
  5. Step 5: Solve for x
    x = 27,262,746,870.44/229,138.44
  6. Step 6: Final answer
    x = 118,979.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.