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Finding the Fourth Proportional to 395,047.66, 545,161.83 and 213,755.62

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Solution

The fourth proportional to 395,047.66, 545,161.83 and 213,755.62 is: 294,980.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,047.66 : 545,161.83 = 213,755.62 : x
  2. Step 2: Convert to fraction form
    395,047.66/545,161.83 = 213,755.62/x
  3. Step 3: Cross multiply
    395,047.66x = 545,161.83 × 213,755.62
  4. Step 4: Simplify right side
    395,047.66x = 116,531,404,971.99
  5. Step 5: Solve for x
    x = 116,531,404,971.99/395,047.66
  6. Step 6: Final answer
    x = 294,980.62

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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.