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Finding the Fourth Proportional to 395,070.28, 545,198.44 and 213,782.22

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Solution

The fourth proportional to 395,070.28, 545,198.44 and 213,782.22 is: 295,020.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,070.28 : 545,198.44 = 213,782.22 : x
  2. Step 2: Convert to fraction form
    395,070.28/545,198.44 = 213,782.22/x
  3. Step 3: Cross multiply
    395,070.28x = 545,198.44 × 213,782.22
  4. Step 4: Simplify right side
    395,070.28x = 116,553,729,048.83
  5. Step 5: Solve for x
    x = 116,553,729,048.83/395,070.28
  6. Step 6: Final answer
    x = 295,020.24

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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.