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Finding the Fourth Proportional to 275,496.60, 380,137.28 and 154,642.98

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Solution

The fourth proportional to 275,496.60, 380,137.28 and 154,642.98 is: 213,380.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,496.60 : 380,137.28 = 154,642.98 : x
  2. Step 2: Convert to fraction form
    275,496.60/380,137.28 = 154,642.98/x
  3. Step 3: Cross multiply
    275,496.60x = 380,137.28 × 154,642.98
  4. Step 4: Simplify right side
    275,496.60x = 58,785,561,015.08
  5. Step 5: Solve for x
    x = 58,785,561,015.08/275,496.60
  6. Step 6: Final answer
    x = 213,380.35

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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.