Home / 383,645.21-529,418.18-211,570.38

Finding the Fourth Proportional to 383,645.21, 529,418.18 and 211,570.38

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Solution

The fourth proportional to 383,645.21, 529,418.18 and 211,570.38 is: 291,960.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,645.21 : 529,418.18 = 211,570.38 : x
  2. Step 2: Convert to fraction form
    383,645.21/529,418.18 = 211,570.38/x
  3. Step 3: Cross multiply
    383,645.21x = 529,418.18 × 211,570.38
  4. Step 4: Simplify right side
    383,645.21x = 112,009,204,860.35
  5. Step 5: Solve for x
    x = 112,009,204,860.35/383,645.21
  6. Step 6: Final answer
    x = 291,960.39

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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.