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Finding the Fourth Proportional to 395,104.62, 545,244.35 and 213,816.55

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Solution

The fourth proportional to 395,104.62, 545,244.35 and 213,816.55 is: 295,066.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,104.62 : 545,244.35 = 213,816.55 : x
  2. Step 2: Convert to fraction form
    395,104.62/545,244.35 = 213,816.55/x
  3. Step 3: Cross multiply
    395,104.62x = 545,244.35 × 213,816.55
  4. Step 4: Simplify right side
    395,104.62x = 116,582,265,823.99
  5. Step 5: Solve for x
    x = 116,582,265,823.99/395,104.62
  6. Step 6: Final answer
    x = 295,066.83

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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.