Home / 263,317.15-395,016.70-85,782.84

Finding the Fourth Proportional to 263,317.15, 395,016.70 and 85,782.84

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Solution

The fourth proportional to 263,317.15, 395,016.70 and 85,782.84 is: 128,687.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,317.15 : 395,016.70 = 85,782.84 : x
  2. Step 2: Convert to fraction form
    263,317.15/395,016.70 = 85,782.84/x
  3. Step 3: Cross multiply
    263,317.15x = 395,016.70 × 85,782.84
  4. Step 4: Simplify right side
    263,317.15x = 33,885,654,373.43
  5. Step 5: Solve for x
    x = 33,885,654,373.43/263,317.15
  6. Step 6: Final answer
    x = 128,687.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.