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Finding the Fourth Proportional to 248,342, 342,711.96 and 135,165.56

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Solution

The fourth proportional to 248,342, 342,711.96 and 135,165.56 is: 186,528.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,342 : 342,711.96 = 135,165.56 : x
  2. Step 2: Convert to fraction form
    248,342/342,711.96 = 135,165.56/x
  3. Step 3: Cross multiply
    248,342x = 342,711.96 × 135,165.56
  4. Step 4: Simplify right side
    248,342x = 46,322,853,992.10
  5. Step 5: Solve for x
    x = 46,322,853,992.10/248,342
  6. Step 6: Final answer
    x = 186,528.47

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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.