Home / 281,454.84-388,394.28-154,131.12

Finding the Fourth Proportional to 281,454.84, 388,394.28 and 154,131.12

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Solution

The fourth proportional to 281,454.84, 388,394.28 and 154,131.12 is: 212,693.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,454.84 : 388,394.28 = 154,131.12 : x
  2. Step 2: Convert to fraction form
    281,454.84/388,394.28 = 154,131.12/x
  3. Step 3: Cross multiply
    281,454.84x = 388,394.28 × 154,131.12
  4. Step 4: Simplify right side
    281,454.84x = 59,863,645,377.99
  5. Step 5: Solve for x
    x = 59,863,645,377.99/281,454.84
  6. Step 6: Final answer
    x = 212,693.61

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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.