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Finding the Fourth Proportional to 248,718.22, 343,221.15 and 135,538.54

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Solution

The fourth proportional to 248,718.22, 343,221.15 and 135,538.54 is: 187,037.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,718.22 : 343,221.15 = 135,538.54 : x
  2. Step 2: Convert to fraction form
    248,718.22/343,221.15 = 135,538.54/x
  3. Step 3: Cross multiply
    248,718.22x = 343,221.15 × 135,538.54
  4. Step 4: Simplify right side
    248,718.22x = 46,519,693,568.12
  5. Step 5: Solve for x
    x = 46,519,693,568.12/248,718.22
  6. Step 6: Final answer
    x = 187,037.74

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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.