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Finding the Fourth Proportional to 275,424.69, 379,988.60 and 179,986.71

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Solution

The fourth proportional to 275,424.69, 379,988.60 and 179,986.71 is: 248,317.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,424.69 : 379,988.60 = 179,986.71 : x
  2. Step 2: Convert to fraction form
    275,424.69/379,988.60 = 179,986.71/x
  3. Step 3: Cross multiply
    275,424.69x = 379,988.60 × 179,986.71
  4. Step 4: Simplify right side
    275,424.69x = 68,392,897,051.57
  5. Step 5: Solve for x
    x = 68,392,897,051.57/275,424.69
  6. Step 6: Final answer
    x = 248,317.96

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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.