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Finding the Fourth Proportional to 275,336.80, 413,005.20 and 264,839.20

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Solution

The fourth proportional to 275,336.80, 413,005.20 and 264,839.20 is: 397,258.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,336.80 : 413,005.20 = 264,839.20 : x
  2. Step 2: Convert to fraction form
    275,336.80/413,005.20 = 264,839.20/x
  3. Step 3: Cross multiply
    275,336.80x = 413,005.20 × 264,839.20
  4. Step 4: Simplify right side
    275,336.80x = 109,379,966,763.84
  5. Step 5: Solve for x
    x = 109,379,966,763.84/275,336.80
  6. Step 6: Final answer
    x = 397,258.80

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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.