Home / 395,263.90-545,464.07-213,975.70

Finding the Fourth Proportional to 395,263.90, 545,464.07 and 213,975.70

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Solution

The fourth proportional to 395,263.90, 545,464.07 and 213,975.70 is: 295,286.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,263.90 : 545,464.07 = 213,975.70 : x
  2. Step 2: Convert to fraction form
    395,263.90/545,464.07 = 213,975.70/x
  3. Step 3: Cross multiply
    395,263.90x = 545,464.07 × 213,975.70
  4. Step 4: Simplify right side
    395,263.90x = 116,716,054,571.97
  5. Step 5: Solve for x
    x = 116,716,054,571.97/395,263.90
  6. Step 6: Final answer
    x = 295,286.40

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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.