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Finding the Fourth Proportional to 548,080.28, 756,447.04 and 318,708.54

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Solution

The fourth proportional to 548,080.28, 756,447.04 and 318,708.54 is: 439,873.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,080.28 : 756,447.04 = 318,708.54 : x
  2. Step 2: Convert to fraction form
    548,080.28/756,447.04 = 318,708.54/x
  3. Step 3: Cross multiply
    548,080.28x = 756,447.04 × 318,708.54
  4. Step 4: Simplify right side
    548,080.28x = 241,086,131,705.72
  5. Step 5: Solve for x
    x = 241,086,131,705.72/548,080.28
  6. Step 6: Final answer
    x = 439,873.76

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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.