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Finding the Fourth Proportional to 275,841.69, 380,661.84 and 154,982.88

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Solution

The fourth proportional to 275,841.69, 380,661.84 and 154,982.88 is: 213,876.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,841.69 : 380,661.84 = 154,982.88 : x
  2. Step 2: Convert to fraction form
    275,841.69/380,661.84 = 154,982.88/x
  3. Step 3: Cross multiply
    275,841.69x = 380,661.84 × 154,982.88
  4. Step 4: Simplify right side
    275,841.69x = 58,996,068,269.30
  5. Step 5: Solve for x
    x = 58,996,068,269.30/275,841.69
  6. Step 6: Final answer
    x = 213,876.55

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1.5x scale

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.