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Finding the Fourth Proportional to 320,016.39, 441,291.15 and 274,843.77

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Solution

The fourth proportional to 320,016.39, 441,291.15 and 274,843.77 is: 378,999.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,016.39 : 441,291.15 = 274,843.77 : x
  2. Step 2: Convert to fraction form
    320,016.39/441,291.15 = 274,843.77/x
  3. Step 3: Cross multiply
    320,016.39x = 441,291.15 × 274,843.77
  4. Step 4: Simplify right side
    320,016.39x = 121,286,123,333.64
  5. Step 5: Solve for x
    x = 121,286,123,333.64/320,016.39
  6. Step 6: Final answer
    x = 378,999.72

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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.