Home / 311,127.06-429,176.43-196,364.92

Finding the Fourth Proportional to 311,127.06, 429,176.43 and 196,364.92

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Solution

The fourth proportional to 311,127.06, 429,176.43 and 196,364.92 is: 270,870.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,127.06 : 429,176.43 = 196,364.92 : x
  2. Step 2: Convert to fraction form
    311,127.06/429,176.43 = 196,364.92/x
  3. Step 3: Cross multiply
    311,127.06x = 429,176.43 × 196,364.92
  4. Step 4: Simplify right side
    311,127.06x = 84,275,195,342.84
  5. Step 5: Solve for x
    x = 84,275,195,342.84/311,127.06
  6. Step 6: Final answer
    x = 270,870.67

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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.