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Finding the Fourth Proportional to 395,308.62, 545,526.27 and 214,020.68

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Solution

The fourth proportional to 395,308.62, 545,526.27 and 214,020.68 is: 295,348.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,308.62 : 545,526.27 = 214,020.68 : x
  2. Step 2: Convert to fraction form
    395,308.62/545,526.27 = 214,020.68/x
  3. Step 3: Cross multiply
    395,308.62x = 545,526.27 × 214,020.68
  4. Step 4: Simplify right side
    395,308.62x = 116,753,900,535.63
  5. Step 5: Solve for x
    x = 116,753,900,535.63/395,308.62
  6. Step 6: Final answer
    x = 295,348.73

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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.