Home / 260,740.22-391,171.35-80,816.24

Finding the Fourth Proportional to 260,740.22, 391,171.35 and 80,816.24

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Solution

The fourth proportional to 260,740.22, 391,171.35 and 80,816.24 is: 121,243.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,740.22 : 391,171.35 = 80,816.24 : x
  2. Step 2: Convert to fraction form
    260,740.22/391,171.35 = 80,816.24/x
  3. Step 3: Cross multiply
    260,740.22x = 391,171.35 × 80,816.24
  4. Step 4: Simplify right side
    260,740.22x = 31,612,997,702.72
  5. Step 5: Solve for x
    x = 31,612,997,702.72/260,740.22
  6. Step 6: Final answer
    x = 121,243.27

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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.