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Finding the Fourth Proportional to 275,884.25, 380,708.01 and 161,173.53

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Solution

The fourth proportional to 275,884.25, 380,708.01 and 161,173.53 is: 222,412.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,884.25 : 380,708.01 = 161,173.53 : x
  2. Step 2: Convert to fraction form
    275,884.25/380,708.01 = 161,173.53/x
  3. Step 3: Cross multiply
    275,884.25x = 380,708.01 × 161,173.53
  4. Step 4: Simplify right side
    275,884.25x = 61,360,053,870.98
  5. Step 5: Solve for x
    x = 61,360,053,870.98/275,884.25
  6. Step 6: Final answer
    x = 222,412.32

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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.