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Finding the Fourth Proportional to 279,373.54, 419,074.14 and 79,723.34

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Solution

The fourth proportional to 279,373.54, 419,074.14 and 79,723.34 is: 119,588.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,373.54 : 419,074.14 = 79,723.34 : x
  2. Step 2: Convert to fraction form
    279,373.54/419,074.14 = 79,723.34/x
  3. Step 3: Cross multiply
    279,373.54x = 419,074.14 × 79,723.34
  4. Step 4: Simplify right side
    279,373.54x = 33,409,990,148.43
  5. Step 5: Solve for x
    x = 33,409,990,148.43/279,373.54
  6. Step 6: Final answer
    x = 119,588.96

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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.