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Finding the Fourth Proportional to 299,880.09, 449,893.98 and 211,306.59

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Solution

The fourth proportional to 299,880.09, 449,893.98 and 211,306.59 is: 317,011.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,880.09 : 449,893.98 = 211,306.59 : x
  2. Step 2: Convert to fraction form
    299,880.09/449,893.98 = 211,306.59/x
  3. Step 3: Cross multiply
    299,880.09x = 449,893.98 × 211,306.59
  4. Step 4: Simplify right side
    299,880.09x = 95,065,562,775.33
  5. Step 5: Solve for x
    x = 95,065,562,775.33/299,880.09
  6. Step 6: Final answer
    x = 317,011.92

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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.