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Finding the Fourth Proportional to 275,970.54, 380,842.97 and 155,104.77

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Solution

The fourth proportional to 275,970.54, 380,842.97 and 155,104.77 is: 214,046.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,970.54 : 380,842.97 = 155,104.77 : x
  2. Step 2: Convert to fraction form
    275,970.54/380,842.97 = 155,104.77/x
  3. Step 3: Cross multiply
    275,970.54x = 380,842.97 × 155,104.77
  4. Step 4: Simplify right side
    275,970.54x = 59,070,561,920.60
  5. Step 5: Solve for x
    x = 59,070,561,920.60/275,970.54
  6. Step 6: Final answer
    x = 214,046.62

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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.