Home / 281,865.12-388,991.88-186,204.12

Finding the Fourth Proportional to 281,865.12, 388,991.88 and 186,204.12

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Solution

The fourth proportional to 281,865.12, 388,991.88 and 186,204.12 is: 256,973.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,865.12 : 388,991.88 = 186,204.12 : x
  2. Step 2: Convert to fraction form
    281,865.12/388,991.88 = 186,204.12/x
  3. Step 3: Cross multiply
    281,865.12x = 388,991.88 × 186,204.12
  4. Step 4: Simplify right side
    281,865.12x = 72,431,890,702.55
  5. Step 5: Solve for x
    x = 72,431,890,702.55/281,865.12
  6. Step 6: Final answer
    x = 256,973.59

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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.