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Finding the Fourth Proportional to 275,412.80, 413,119.20 and 264,915.20

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Solution

The fourth proportional to 275,412.80, 413,119.20 and 264,915.20 is: 397,372.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,412.80 : 413,119.20 = 264,915.20 : x
  2. Step 2: Convert to fraction form
    275,412.80/413,119.20 = 264,915.20/x
  3. Step 3: Cross multiply
    275,412.80x = 413,119.20 × 264,915.20
  4. Step 4: Simplify right side
    275,412.80x = 109,441,555,491.84
  5. Step 5: Solve for x
    x = 109,441,555,491.84/275,412.80
  6. Step 6: Final answer
    x = 397,372.80

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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.