Home / 318,546.40-439,571.38-189,477.76

Finding the Fourth Proportional to 318,546.40, 439,571.38 and 189,477.76

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Solution

The fourth proportional to 318,546.40, 439,571.38 and 189,477.76 is: 261,465.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,546.40 : 439,571.38 = 189,477.76 : x
  2. Step 2: Convert to fraction form
    318,546.40/439,571.38 = 189,477.76/x
  3. Step 3: Cross multiply
    318,546.40x = 439,571.38 × 189,477.76
  4. Step 4: Simplify right side
    318,546.40x = 83,288,997,297.26
  5. Step 5: Solve for x
    x = 83,288,997,297.26/318,546.40
  6. Step 6: Final answer
    x = 261,465.83

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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.