Home / 394,945.84-545,022.72-213,657.04

Finding the Fourth Proportional to 394,945.84, 545,022.72 and 213,657.04

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Solution

The fourth proportional to 394,945.84, 545,022.72 and 213,657.04 is: 294,845.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,945.84 : 545,022.72 = 213,657.04 : x
  2. Step 2: Convert to fraction form
    394,945.84/545,022.72 = 213,657.04/x
  3. Step 3: Cross multiply
    394,945.84x = 545,022.72 × 213,657.04
  4. Step 4: Simplify right side
    394,945.84x = 116,447,941,087.95
  5. Step 5: Solve for x
    x = 116,447,941,087.95/394,945.84
  6. Step 6: Final answer
    x = 294,845.34

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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.