Home / 279,339.90-419,049.21-89,736.69

Finding the Fourth Proportional to 279,339.90, 419,049.21 and 89,736.69

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Solution

The fourth proportional to 279,339.90, 419,049.21 and 89,736.69 is: 134,617.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,339.90 : 419,049.21 = 89,736.69 : x
  2. Step 2: Convert to fraction form
    279,339.90/419,049.21 = 89,736.69/x
  3. Step 3: Cross multiply
    279,339.90x = 419,049.21 × 89,736.69
  4. Step 4: Simplify right side
    279,339.90x = 37,604,089,052.51
  5. Step 5: Solve for x
    x = 37,604,089,052.51/279,339.90
  6. Step 6: Final answer
    x = 134,617.68

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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.