Home / 260,847.20-391,343.70-127,731.80

Finding the Fourth Proportional to 260,847.20, 391,343.70 and 127,731.80

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Solution

The fourth proportional to 260,847.20, 391,343.70 and 127,731.80 is: 191,633.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,847.20 : 391,343.70 = 127,731.80 : x
  2. Step 2: Convert to fraction form
    260,847.20/391,343.70 = 127,731.80/x
  3. Step 3: Cross multiply
    260,847.20x = 391,343.70 × 127,731.80
  4. Step 4: Simplify right side
    260,847.20x = 49,987,035,219.66
  5. Step 5: Solve for x
    x = 49,987,035,219.66/260,847.20
  6. Step 6: Final answer
    x = 191,633.40

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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.