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Finding the Fourth Proportional to 395,020.27, 545,124.07 and 213,728.22

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Solution

The fourth proportional to 395,020.27, 545,124.07 and 213,728.22 is: 294,942.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,020.27 : 545,124.07 = 213,728.22 : x
  2. Step 2: Convert to fraction form
    395,020.27/545,124.07 = 213,728.22/x
  3. Step 3: Cross multiply
    395,020.27x = 545,124.07 × 213,728.22
  4. Step 4: Simplify right side
    395,020.27x = 116,508,397,160.26
  5. Step 5: Solve for x
    x = 116,508,397,160.26/395,020.27
  6. Step 6: Final answer
    x = 294,942.83

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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.