Home / 394,120.04-543,887.78-215,272.04

Finding the Fourth Proportional to 394,120.04, 543,887.78 and 215,272.04

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Solution

The fourth proportional to 394,120.04, 543,887.78 and 215,272.04 is: 297,076.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,120.04 : 543,887.78 = 215,272.04 : x
  2. Step 2: Convert to fraction form
    394,120.04/543,887.78 = 215,272.04/x
  3. Step 3: Cross multiply
    394,120.04x = 543,887.78 × 215,272.04
  4. Step 4: Simplify right side
    394,120.04x = 117,083,831,931.67
  5. Step 5: Solve for x
    x = 117,083,831,931.67/394,120.04
  6. Step 6: Final answer
    x = 297,076.58

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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.