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Finding the Fourth Proportional to 248,286, 342,634.68 and 135,109.56

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Solution

The fourth proportional to 248,286, 342,634.68 and 135,109.56 is: 186,451.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,286 : 342,634.68 = 135,109.56 : x
  2. Step 2: Convert to fraction form
    248,286/342,634.68 = 135,109.56/x
  3. Step 3: Cross multiply
    248,286x = 342,634.68 × 135,109.56
  4. Step 4: Simplify right side
    248,286x = 46,293,220,855.54
  5. Step 5: Solve for x
    x = 46,293,220,855.54/248,286
  6. Step 6: Final answer
    x = 186,451.19

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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.