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Finding the Fourth Proportional to 248,760.56, 343,289.70 and 141,330.78

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Solution

The fourth proportional to 248,760.56, 343,289.70 and 141,330.78 is: 195,036.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,760.56 : 343,289.70 = 141,330.78 : x
  2. Step 2: Convert to fraction form
    248,760.56/343,289.70 = 141,330.78/x
  3. Step 3: Cross multiply
    248,760.56x = 343,289.70 × 141,330.78
  4. Step 4: Simplify right side
    248,760.56x = 48,517,401,066.97
  5. Step 5: Solve for x
    x = 48,517,401,066.97/248,760.56
  6. Step 6: Final answer
    x = 195,036.55

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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.