Home / 281,623-388,639.74-154,301.53

Finding the Fourth Proportional to 281,623, 388,639.74 and 154,301.53

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Solution

The fourth proportional to 281,623, 388,639.74 and 154,301.53 is: 212,936.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,623 : 388,639.74 = 154,301.53 : x
  2. Step 2: Convert to fraction form
    281,623/388,639.74 = 154,301.53/x
  3. Step 3: Cross multiply
    281,623x = 388,639.74 × 154,301.53
  4. Step 4: Simplify right side
    281,623x = 59,967,706,500.80
  5. Step 5: Solve for x
    x = 59,967,706,500.80/281,623
  6. Step 6: Final answer
    x = 212,936.11

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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.