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Finding the Fourth Proportional to 298,917.70, 447,720.45 and 259,551.70

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Solution

The fourth proportional to 298,917.70, 447,720.45 and 259,551.70 is: 388,757.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,917.70 : 447,720.45 = 259,551.70 : x
  2. Step 2: Convert to fraction form
    298,917.70/447,720.45 = 259,551.70/x
  3. Step 3: Cross multiply
    298,917.70x = 447,720.45 × 259,551.70
  4. Step 4: Simplify right side
    298,917.70x = 116,206,603,922.27
  5. Step 5: Solve for x
    x = 116,206,603,922.27/298,917.70
  6. Step 6: Final answer
    x = 388,757.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.