Home / 275,131.40-379,838.64-210,481.52

Finding the Fourth Proportional to 275,131.40, 379,838.64 and 210,481.52

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Solution

The fourth proportional to 275,131.40, 379,838.64 and 210,481.52 is: 290,584.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,131.40 : 379,838.64 = 210,481.52 : x
  2. Step 2: Convert to fraction form
    275,131.40/379,838.64 = 210,481.52/x
  3. Step 3: Cross multiply
    275,131.40x = 379,838.64 × 210,481.52
  4. Step 4: Simplify right side
    275,131.40x = 79,949,014,301.93
  5. Step 5: Solve for x
    x = 79,949,014,301.93/275,131.40
  6. Step 6: Final answer
    x = 290,584.84

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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.