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Finding the Fourth Proportional to 235,904, 325,549.44 and 129,920

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Solution

The fourth proportional to 235,904, 325,549.44 and 129,920 is: 179,290.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,904 : 325,549.44 = 129,920 : x
  2. Step 2: Convert to fraction form
    235,904/325,549.44 = 129,920/x
  3. Step 3: Cross multiply
    235,904x = 325,549.44 × 129,920
  4. Step 4: Simplify right side
    235,904x = 42,295,383,244.80
  5. Step 5: Solve for x
    x = 42,295,383,244.80/235,904
  6. Step 6: Final answer
    x = 179,290.66

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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.