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Finding the Fourth Proportional to 260,832.40, 391,540.20 and 201,929.20

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Solution

The fourth proportional to 260,832.40, 391,540.20 and 201,929.20 is: 303,119.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,832.40 : 391,540.20 = 201,929.20 : x
  2. Step 2: Convert to fraction form
    260,832.40/391,540.20 = 201,929.20/x
  3. Step 3: Cross multiply
    260,832.40x = 391,540.20 × 201,929.20
  4. Step 4: Simplify right side
    260,832.40x = 79,063,399,353.84
  5. Step 5: Solve for x
    x = 79,063,399,353.84/260,832.40
  6. Step 6: Final answer
    x = 303,119.55

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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.