Home / 281,542.06-388,528.21-154,219.78

Finding the Fourth Proportional to 281,542.06, 388,528.21 and 154,219.78

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Solution

The fourth proportional to 281,542.06, 388,528.21 and 154,219.78 is: 212,823.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,542.06 : 388,528.21 = 154,219.78 : x
  2. Step 2: Convert to fraction form
    281,542.06/388,528.21 = 154,219.78/x
  3. Step 3: Cross multiply
    281,542.06x = 388,528.21 × 154,219.78
  4. Step 4: Simplify right side
    281,542.06x = 59,918,735,069.99
  5. Step 5: Solve for x
    x = 59,918,735,069.99/281,542.06
  6. Step 6: Final answer
    x = 212,823.39

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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.