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Finding the Fourth Proportional to 395,327.88, 545,552.79 and 214,039.92

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Solution

The fourth proportional to 395,327.88, 545,552.79 and 214,039.92 is: 295,375.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,327.88 : 545,552.79 = 214,039.92 : x
  2. Step 2: Convert to fraction form
    395,327.88/545,552.79 = 214,039.92/x
  3. Step 3: Cross multiply
    395,327.88x = 545,552.79 × 214,039.92
  4. Step 4: Simplify right side
    395,327.88x = 116,770,075,527.38
  5. Step 5: Solve for x
    x = 116,770,075,527.38/395,327.88
  6. Step 6: Final answer
    x = 295,375.26

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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.