Home / 383,091.07-528,689.56-211,009

Finding the Fourth Proportional to 383,091.07, 528,689.56 and 211,009

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Solution

The fourth proportional to 383,091.07, 528,689.56 and 211,009 is: 291,205.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,091.07 : 528,689.56 = 211,009 : x
  2. Step 2: Convert to fraction form
    383,091.07/528,689.56 = 211,009/x
  3. Step 3: Cross multiply
    383,091.07x = 528,689.56 × 211,009
  4. Step 4: Simplify right side
    383,091.07x = 111,558,255,366.04
  5. Step 5: Solve for x
    x = 111,558,255,366.04/383,091.07
  6. Step 6: Final answer
    x = 291,205.58

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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.