Home / 281,542.19-388,528.38-154,219.91

Finding the Fourth Proportional to 281,542.19, 388,528.38 and 154,219.91

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Solution

The fourth proportional to 281,542.19, 388,528.38 and 154,219.91 is: 212,823.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,542.19 : 388,528.38 = 154,219.91 : x
  2. Step 2: Convert to fraction form
    281,542.19/388,528.38 = 154,219.91/x
  3. Step 3: Cross multiply
    281,542.19x = 388,528.38 × 154,219.91
  4. Step 4: Simplify right side
    281,542.19x = 59,918,809,853.40
  5. Step 5: Solve for x
    x = 59,918,809,853.40/281,542.19
  6. Step 6: Final answer
    x = 212,823.56

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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.