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Finding the Fourth Proportional to 275,538.81, 380,422.88 and 168,171.09

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Solution

The fourth proportional to 275,538.81, 380,422.88 and 168,171.09 is: 232,185.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,538.81 : 380,422.88 = 168,171.09 : x
  2. Step 2: Convert to fraction form
    275,538.81/380,422.88 = 168,171.09/x
  3. Step 3: Cross multiply
    275,538.81x = 380,422.88 × 168,171.09
  4. Step 4: Simplify right side
    275,538.81x = 63,976,130,390.54
  5. Step 5: Solve for x
    x = 63,976,130,390.54/275,538.81
  6. Step 6: Final answer
    x = 232,185.55

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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.