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Finding the Fourth Proportional to 275,738.67, 380,528.55 and 154,903.32

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Solution

The fourth proportional to 275,738.67, 380,528.55 and 154,903.32 is: 213,771.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,738.67 : 380,528.55 = 154,903.32 : x
  2. Step 2: Convert to fraction form
    275,738.67/380,528.55 = 154,903.32/x
  3. Step 3: Cross multiply
    275,738.67x = 380,528.55 × 154,903.32
  4. Step 4: Simplify right side
    275,738.67x = 58,945,135,749.79
  5. Step 5: Solve for x
    x = 58,945,135,749.79/275,738.67
  6. Step 6: Final answer
    x = 213,771.74

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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.