Home / 395,108.23-545,250.72-213,820.11

Finding the Fourth Proportional to 395,108.23, 545,250.72 and 213,820.11

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Solution

The fourth proportional to 395,108.23, 545,250.72 and 213,820.11 is: 295,072.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,108.23 : 545,250.72 = 213,820.11 : x
  2. Step 2: Convert to fraction form
    395,108.23/545,250.72 = 213,820.11/x
  3. Step 3: Cross multiply
    395,108.23x = 545,250.72 × 213,820.11
  4. Step 4: Simplify right side
    395,108.23x = 116,585,568,927.98
  5. Step 5: Solve for x
    x = 116,585,568,927.98/395,108.23
  6. Step 6: Final answer
    x = 295,072.49

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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.