Home / 394,140.75-543,916.43-215,292.75

Finding the Fourth Proportional to 394,140.75, 543,916.43 and 215,292.75

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Solution

The fourth proportional to 394,140.75, 543,916.43 and 215,292.75 is: 297,105.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,140.75 : 543,916.43 = 215,292.75 : x
  2. Step 2: Convert to fraction form
    394,140.75/543,916.43 = 215,292.75/x
  3. Step 3: Cross multiply
    394,140.75x = 543,916.43 × 215,292.75
  4. Step 4: Simplify right side
    394,140.75x = 117,101,263,984.88
  5. Step 5: Solve for x
    x = 117,101,263,984.88/394,140.75
  6. Step 6: Final answer
    x = 297,105.19

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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.