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Finding the Fourth Proportional to 275,288.01, 379,930.77 and 154,406.45

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Solution

The fourth proportional to 275,288.01, 379,930.77 and 154,406.45 is: 213,099.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,288.01 : 379,930.77 = 154,406.45 : x
  2. Step 2: Convert to fraction form
    275,288.01/379,930.77 = 154,406.45/x
  3. Step 3: Cross multiply
    275,288.01x = 379,930.77 × 154,406.45
  4. Step 4: Simplify right side
    275,288.01x = 58,663,761,441.47
  5. Step 5: Solve for x
    x = 58,663,761,441.47/275,288.01
  6. Step 6: Final answer
    x = 213,099.59

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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.