Home / 286,917.40-395,940.64-196,270.30

Finding the Fourth Proportional to 286,917.40, 395,940.64 and 196,270.30

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Solution

The fourth proportional to 286,917.40, 395,940.64 and 196,270.30 is: 270,849.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,917.40 : 395,940.64 = 196,270.30 : x
  2. Step 2: Convert to fraction form
    286,917.40/395,940.64 = 196,270.30/x
  3. Step 3: Cross multiply
    286,917.40x = 395,940.64 × 196,270.30
  4. Step 4: Simplify right side
    286,917.40x = 77,711,388,194.99
  5. Step 5: Solve for x
    x = 77,711,388,194.99/286,917.40
  6. Step 6: Final answer
    x = 270,849.34

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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.