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Finding the Fourth Proportional to 270,673.20, 405,664.20 and 208,033.20

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Solution

The fourth proportional to 270,673.20, 405,664.20 and 208,033.20 is: 311,784.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,673.20 : 405,664.20 = 208,033.20 : x
  2. Step 2: Convert to fraction form
    270,673.20/405,664.20 = 208,033.20/x
  3. Step 3: Cross multiply
    270,673.20x = 405,664.20 × 208,033.20
  4. Step 4: Simplify right side
    270,673.20x = 84,391,621,651.44
  5. Step 5: Solve for x
    x = 84,391,621,651.44/270,673.20
  6. Step 6: Final answer
    x = 311,784.18

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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.