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Finding the Fourth Proportional to 490,920.68, 677,474.50 and 273,132.56

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Solution

The fourth proportional to 490,920.68, 677,474.50 and 273,132.56 is: 376,925.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,920.68 : 677,474.50 = 273,132.56 : x
  2. Step 2: Convert to fraction form
    490,920.68/677,474.50 = 273,132.56/x
  3. Step 3: Cross multiply
    490,920.68x = 677,474.50 × 273,132.56
  4. Step 4: Simplify right side
    490,920.68x = 185,040,344,519.72
  5. Step 5: Solve for x
    x = 185,040,344,519.72/490,920.68
  6. Step 6: Final answer
    x = 376,925.14

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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.