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Finding the Fourth Proportional to 379,940.63, 524,326.77 and 218,769.66

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Solution

The fourth proportional to 379,940.63, 524,326.77 and 218,769.66 is: 301,907.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,940.63 : 524,326.77 = 218,769.66 : x
  2. Step 2: Convert to fraction form
    379,940.63/524,326.77 = 218,769.66/x
  3. Step 3: Cross multiply
    379,940.63x = 524,326.77 × 218,769.66
  4. Step 4: Simplify right side
    379,940.63x = 114,706,789,201.80
  5. Step 5: Solve for x
    x = 114,706,789,201.80/379,940.63
  6. Step 6: Final answer
    x = 301,907.14

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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.