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Finding the Fourth Proportional to 366,112.78, 505,295.47 and 218,927.68

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Solution

The fourth proportional to 366,112.78, 505,295.47 and 218,927.68 is: 302,155.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,112.78 : 505,295.47 = 218,927.68 : x
  2. Step 2: Convert to fraction form
    366,112.78/505,295.47 = 218,927.68/x
  3. Step 3: Cross multiply
    366,112.78x = 505,295.47 × 218,927.68
  4. Step 4: Simplify right side
    366,112.78x = 110,623,162,740.56
  5. Step 5: Solve for x
    x = 110,623,162,740.56/366,112.78
  6. Step 6: Final answer
    x = 302,155.97

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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.