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Finding the Fourth Proportional to 299,725.20, 449,587.80 and 262,861.20

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Solution

The fourth proportional to 299,725.20, 449,587.80 and 262,861.20 is: 394,291.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,725.20 : 449,587.80 = 262,861.20 : x
  2. Step 2: Convert to fraction form
    299,725.20/449,587.80 = 262,861.20/x
  3. Step 3: Cross multiply
    299,725.20x = 449,587.80 × 262,861.20
  4. Step 4: Simplify right side
    299,725.20x = 118,179,188,613.36
  5. Step 5: Solve for x
    x = 118,179,188,613.36/299,725.20
  6. Step 6: Final answer
    x = 394,291.80

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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.