Home / 260,828.85-391,388.64-140,883.38

Finding the Fourth Proportional to 260,828.85, 391,388.64 and 140,883.38

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Solution

The fourth proportional to 260,828.85, 391,388.64 and 140,883.38 is: 211,403.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,828.85 : 391,388.64 = 140,883.38 : x
  2. Step 2: Convert to fraction form
    260,828.85/391,388.64 = 140,883.38/x
  3. Step 3: Cross multiply
    260,828.85x = 391,388.64 × 140,883.38
  4. Step 4: Simplify right side
    260,828.85x = 55,140,154,496.80
  5. Step 5: Solve for x
    x = 55,140,154,496.80/260,828.85
  6. Step 6: Final answer
    x = 211,403.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.