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Finding the Fourth Proportional to 274,288.80, 411,433.20 and 263,791.20

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Solution

The fourth proportional to 274,288.80, 411,433.20 and 263,791.20 is: 395,686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,288.80 : 411,433.20 = 263,791.20 : x
  2. Step 2: Convert to fraction form
    274,288.80/411,433.20 = 263,791.20/x
  3. Step 3: Cross multiply
    274,288.80x = 411,433.20 × 263,791.20
  4. Step 4: Simplify right side
    274,288.80x = 108,532,457,547.84
  5. Step 5: Solve for x
    x = 108,532,457,547.84/274,288.80
  6. Step 6: Final answer
    x = 395,686.80

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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.