Home / 281,542.38-388,528.68-154,218.48

Finding the Fourth Proportional to 281,542.38, 388,528.68 and 154,218.48

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Solution

The fourth proportional to 281,542.38, 388,528.68 and 154,218.48 is: 212,821.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,542.38 : 388,528.68 = 154,218.48 : x
  2. Step 2: Convert to fraction form
    281,542.38/388,528.68 = 154,218.48/x
  3. Step 3: Cross multiply
    281,542.38x = 388,528.68 × 154,218.48
  4. Step 4: Simplify right side
    281,542.38x = 59,918,302,466.01
  5. Step 5: Solve for x
    x = 59,918,302,466.01/281,542.38
  6. Step 6: Final answer
    x = 212,821.61

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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.