Home / 260,687.05-391,178.37-140,742.40

Finding the Fourth Proportional to 260,687.05, 391,178.37 and 140,742.40

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Solution

The fourth proportional to 260,687.05, 391,178.37 and 140,742.40 is: 211,193.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,687.05 : 391,178.37 = 140,742.40 : x
  2. Step 2: Convert to fraction form
    260,687.05/391,178.37 = 140,742.40/x
  3. Step 3: Cross multiply
    260,687.05x = 391,178.37 × 140,742.40
  4. Step 4: Simplify right side
    260,687.05x = 55,055,379,962.28
  5. Step 5: Solve for x
    x = 55,055,379,962.28/260,687.05
  6. Step 6: Final answer
    x = 211,193.39

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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.