Home / 397,501,481.26-548,570,148.56-221,300,667.68

Finding the Fourth Proportional to 397,501,481.26, 548,570,148.56 and 221,300,667.68

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Solution

The fourth proportional to 397,501,481.26, 548,570,148.56 and 221,300,667.68 is: 305,405,000.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,501,481.26 : 548,570,148.56 = 221,300,667.68 : x
  2. Step 2: Convert to fraction form
    397,501,481.26/548,570,148.56 = 221,300,667.68/x
  3. Step 3: Cross multiply
    397,501,481.26x = 548,570,148.56 × 221,300,667.68
  4. Step 4: Simplify right side
    397,501,481.26x = 121,398,940,145,644,784
  5. Step 5: Solve for x
    x = 121,398,940,145,644,784/397,501,481.26
  6. Step 6: Final answer
    x = 305,405,000.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.