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Finding the Fourth Proportional to 275,768.55, 380,519.15 and 154,886.68

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Solution

The fourth proportional to 275,768.55, 380,519.15 and 154,886.68 is: 213,720.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,768.55 : 380,519.15 = 154,886.68 : x
  2. Step 2: Convert to fraction form
    275,768.55/380,519.15 = 154,886.68/x
  3. Step 3: Cross multiply
    275,768.55x = 380,519.15 × 154,886.68
  4. Step 4: Simplify right side
    275,768.55x = 58,937,345,917.33
  5. Step 5: Solve for x
    x = 58,937,345,917.33/275,768.55
  6. Step 6: Final answer
    x = 213,720.34

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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.