Home / 281,839.08-388,952.84-154,520.04

Finding the Fourth Proportional to 281,839.08, 388,952.84 and 154,520.04

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Solution

The fourth proportional to 281,839.08, 388,952.84 and 154,520.04 is: 213,245.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,839.08 : 388,952.84 = 154,520.04 : x
  2. Step 2: Convert to fraction form
    281,839.08/388,952.84 = 154,520.04/x
  3. Step 3: Cross multiply
    281,839.08x = 388,952.84 × 154,520.04
  4. Step 4: Simplify right side
    281,839.08x = 60,101,008,394.91
  5. Step 5: Solve for x
    x = 60,101,008,394.91/281,839.08
  6. Step 6: Final answer
    x = 213,245.83

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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.