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Finding the Fourth Proportional to 275,504.85, 380,148.66 and 154,651.23

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Solution

The fourth proportional to 275,504.85, 380,148.66 and 154,651.23 is: 213,391.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,504.85 : 380,148.66 = 154,651.23 : x
  2. Step 2: Convert to fraction form
    275,504.85/380,148.66 = 154,651.23/x
  3. Step 3: Cross multiply
    275,504.85x = 380,148.66 × 154,651.23
  4. Step 4: Simplify right side
    275,504.85x = 58,790,457,851.85
  5. Step 5: Solve for x
    x = 58,790,457,851.85/275,504.85
  6. Step 6: Final answer
    x = 213,391.73

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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.