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Finding the Fourth Proportional to 248,718.88, 343,230.92 and 135,541.60

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Solution

The fourth proportional to 248,718.88, 343,230.92 and 135,541.60 is: 187,046.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,718.88 : 343,230.92 = 135,541.60 : x
  2. Step 2: Convert to fraction form
    248,718.88/343,230.92 = 135,541.60/x
  3. Step 3: Cross multiply
    248,718.88x = 343,230.92 × 135,541.60
  4. Step 4: Simplify right side
    248,718.88x = 46,522,068,066.27
  5. Step 5: Solve for x
    x = 46,522,068,066.27/248,718.88
  6. Step 6: Final answer
    x = 187,046.79

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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.