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Finding the Fourth Proportional to 275,433.80, 413,247.90 and 265,713.80

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Solution

The fourth proportional to 275,433.80, 413,247.90 and 265,713.80 is: 398,664.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,433.80 : 413,247.90 = 265,713.80 : x
  2. Step 2: Convert to fraction form
    275,433.80/413,247.90 = 265,713.80/x
  3. Step 3: Cross multiply
    275,433.80x = 413,247.90 × 265,713.80
  4. Step 4: Simplify right side
    275,433.80x = 109,805,669,851.02
  5. Step 5: Solve for x
    x = 109,805,669,851.02/275,433.80
  6. Step 6: Final answer
    x = 398,664.47

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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.