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Finding the Fourth Proportional to 395,396.48, 545,651.60 and 214,112.48

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Solution

The fourth proportional to 395,396.48, 545,651.60 and 214,112.48 is: 295,477.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,396.48 : 545,651.60 = 214,112.48 : x
  2. Step 2: Convert to fraction form
    395,396.48/545,651.60 = 214,112.48/x
  3. Step 3: Cross multiply
    395,396.48x = 545,651.60 × 214,112.48
  4. Step 4: Simplify right side
    395,396.48x = 116,830,817,291.97
  5. Step 5: Solve for x
    x = 116,830,817,291.97/395,396.48
  6. Step 6: Final answer
    x = 295,477.64

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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.