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Finding the Fourth Proportional to 275,399.46, 380,020.41 and 154,515.60

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Solution

The fourth proportional to 275,399.46, 380,020.41 and 154,515.60 is: 213,214.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,399.46 : 380,020.41 = 154,515.60 : x
  2. Step 2: Convert to fraction form
    275,399.46/380,020.41 = 154,515.60/x
  3. Step 3: Cross multiply
    275,399.46x = 380,020.41 × 154,515.60
  4. Step 4: Simplify right side
    275,399.46x = 58,719,081,663.40
  5. Step 5: Solve for x
    x = 58,719,081,663.40/275,399.46
  6. Step 6: Final answer
    x = 213,214.22

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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.