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Finding the Fourth Proportional to 395,068.48, 545,190.70 and 213,776.44

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Solution

The fourth proportional to 395,068.48, 545,190.70 and 213,776.44 is: 295,009.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,068.48 : 545,190.70 = 213,776.44 : x
  2. Step 2: Convert to fraction form
    395,068.48/545,190.70 = 213,776.44/x
  3. Step 3: Cross multiply
    395,068.48x = 545,190.70 × 213,776.44
  4. Step 4: Simplify right side
    395,068.48x = 116,548,923,172.27
  5. Step 5: Solve for x
    x = 116,548,923,172.27/395,068.48
  6. Step 6: Final answer
    x = 295,009.42

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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.