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Finding the Fourth Proportional to 281,383.58, 388,293.96 and 154,034.54

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Solution

The fourth proportional to 281,383.58, 388,293.96 and 154,034.54 is: 212,559.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,383.58 : 388,293.96 = 154,034.54 : x
  2. Step 2: Convert to fraction form
    281,383.58/388,293.96 = 154,034.54/x
  3. Step 3: Cross multiply
    281,383.58x = 388,293.96 × 154,034.54
  4. Step 4: Simplify right side
    281,383.58x = 59,810,681,513.38
  5. Step 5: Solve for x
    x = 59,810,681,513.38/281,383.58
  6. Step 6: Final answer
    x = 212,559.25

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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.