Home / 280,839.04-387,441.84-196,005.76

Finding the Fourth Proportional to 280,839.04, 387,441.84 and 196,005.76

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Solution

The fourth proportional to 280,839.04, 387,441.84 and 196,005.76 is: 270,406.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,839.04 : 387,441.84 = 196,005.76 : x
  2. Step 2: Convert to fraction form
    280,839.04/387,441.84 = 196,005.76/x
  3. Step 3: Cross multiply
    280,839.04x = 387,441.84 × 196,005.76
  4. Step 4: Simplify right side
    280,839.04x = 75,940,832,305.00
  5. Step 5: Solve for x
    x = 75,940,832,305.00/280,839.04
  6. Step 6: Final answer
    x = 270,406.96

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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.