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Finding the Fourth Proportional to 395,044.80, 545,160.04 and 213,759.91

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Solution

The fourth proportional to 395,044.80, 545,160.04 and 213,759.91 is: 294,987.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,044.80 : 545,160.04 = 213,759.91 : x
  2. Step 2: Convert to fraction form
    395,044.80/545,160.04 = 213,759.91/x
  3. Step 3: Cross multiply
    395,044.80x = 545,160.04 × 213,759.91
  4. Step 4: Simplify right side
    395,044.80x = 116,533,361,233.05
  5. Step 5: Solve for x
    x = 116,533,361,233.05/395,044.80
  6. Step 6: Final answer
    x = 294,987.71

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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.