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Finding the Fourth Proportional to 275,689.80, 413,631.90 and 265,969.80

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Solution

The fourth proportional to 275,689.80, 413,631.90 and 265,969.80 is: 399,048.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,689.80 : 413,631.90 = 265,969.80 : x
  2. Step 2: Convert to fraction form
    275,689.80/413,631.90 = 265,969.80/x
  3. Step 3: Cross multiply
    275,689.80x = 413,631.90 × 265,969.80
  4. Step 4: Simplify right side
    275,689.80x = 110,013,593,716.62
  5. Step 5: Solve for x
    x = 110,013,593,716.62/275,689.80
  6. Step 6: Final answer
    x = 399,048.47

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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.