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Finding the Fourth Proportional to 248,338.72, 342,708.96 and 135,162.64

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Solution

The fourth proportional to 248,338.72, 342,708.96 and 135,162.64 is: 186,525.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,338.72 : 342,708.96 = 135,162.64 : x
  2. Step 2: Convert to fraction form
    248,338.72/342,708.96 = 135,162.64/x
  3. Step 3: Cross multiply
    248,338.72x = 342,708.96 × 135,162.64
  4. Step 4: Simplify right side
    248,338.72x = 46,321,447,785.25
  5. Step 5: Solve for x
    x = 46,321,447,785.25/248,338.72
  6. Step 6: Final answer
    x = 186,525.27

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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.