Home / 281,828.28-388,928.40-154,496.28

Finding the Fourth Proportional to 281,828.28, 388,928.40 and 154,496.28

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Solution

The fourth proportional to 281,828.28, 388,928.40 and 154,496.28 is: 213,207.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,828.28 : 388,928.40 = 154,496.28 : x
  2. Step 2: Convert to fraction form
    281,828.28/388,928.40 = 154,496.28/x
  3. Step 3: Cross multiply
    281,828.28x = 388,928.40 × 154,496.28
  4. Step 4: Simplify right side
    281,828.28x = 60,087,990,986.35
  5. Step 5: Solve for x
    x = 60,087,990,986.35/281,828.28
  6. Step 6: Final answer
    x = 213,207.81

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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.