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Finding the Fourth Proportional to 395,091.88, 545,222.64 and 213,799.84

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Solution

The fourth proportional to 395,091.88, 545,222.64 and 213,799.84 is: 295,041.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,091.88 : 545,222.64 = 213,799.84 : x
  2. Step 2: Convert to fraction form
    395,091.88/545,222.64 = 213,799.84/x
  3. Step 3: Cross multiply
    395,091.88x = 545,222.64 × 213,799.84
  4. Step 4: Simplify right side
    395,091.88x = 116,568,513,196.38
  5. Step 5: Solve for x
    x = 116,568,513,196.38/395,091.88
  6. Step 6: Final answer
    x = 295,041.53

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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.