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Finding the Fourth Proportional to 275,405.54, 380,067.17 and 154,554.21

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Solution

The fourth proportional to 275,405.54, 380,067.17 and 154,554.21 is: 213,289.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,405.54 : 380,067.17 = 154,554.21 : x
  2. Step 2: Convert to fraction form
    275,405.54/380,067.17 = 154,554.21/x
  3. Step 3: Cross multiply
    275,405.54x = 380,067.17 × 154,554.21
  4. Step 4: Simplify right side
    275,405.54x = 58,740,980,433.51
  5. Step 5: Solve for x
    x = 58,740,980,433.51/275,405.54
  6. Step 6: Final answer
    x = 213,289.03

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1.5x scale

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.