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Finding the Fourth Proportional to 248,999.84, 343,620.86 and 135,825.02

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Solution

The fourth proportional to 248,999.84, 343,620.86 and 135,825.02 is: 187,439.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,999.84 : 343,620.86 = 135,825.02 : x
  2. Step 2: Convert to fraction form
    248,999.84/343,620.86 = 135,825.02/x
  3. Step 3: Cross multiply
    248,999.84x = 343,620.86 × 135,825.02
  4. Step 4: Simplify right side
    248,999.84x = 46,672,310,181.92
  5. Step 5: Solve for x
    x = 46,672,310,181.92/248,999.84
  6. Step 6: Final answer
    x = 187,439.12

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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.