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Finding the Fourth Proportional to 279,421.01, 419,135.43 and 79,741.41

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Solution

The fourth proportional to 279,421.01, 419,135.43 and 79,741.41 is: 119,613.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,421.01 : 419,135.43 = 79,741.41 : x
  2. Step 2: Convert to fraction form
    279,421.01/419,135.43 = 79,741.41/x
  3. Step 3: Cross multiply
    279,421.01x = 419,135.43 × 79,741.41
  4. Step 4: Simplify right side
    279,421.01x = 33,422,450,169.16
  5. Step 5: Solve for x
    x = 33,422,450,169.16/279,421.01
  6. Step 6: Final answer
    x = 119,613.23

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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.