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Finding the Fourth Proportional to 395,520.32, 545,817.79 and 214,235.79

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Solution

The fourth proportional to 395,520.32, 545,817.79 and 214,235.79 is: 295,645.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,520.32 : 545,817.79 = 214,235.79 : x
  2. Step 2: Convert to fraction form
    395,520.32/545,817.79 = 214,235.79/x
  3. Step 3: Cross multiply
    395,520.32x = 545,817.79 × 214,235.79
  4. Step 4: Simplify right side
    395,520.32x = 116,933,703,657.68
  5. Step 5: Solve for x
    x = 116,933,703,657.68/395,520.32
  6. Step 6: Final answer
    x = 295,645.25

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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.