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Finding the Fourth Proportional to 260,905.13, 391,404.40 and 134,511.44

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Solution

The fourth proportional to 260,905.13, 391,404.40 and 134,511.44 is: 201,791.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,905.13 : 391,404.40 = 134,511.44 : x
  2. Step 2: Convert to fraction form
    260,905.13/391,404.40 = 134,511.44/x
  3. Step 3: Cross multiply
    260,905.13x = 391,404.40 × 134,511.44
  4. Step 4: Simplify right side
    260,905.13x = 52,648,367,504.06
  5. Step 5: Solve for x
    x = 52,648,367,504.06/260,905.13
  6. Step 6: Final answer
    x = 201,791.23

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1.5x scale

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.