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Finding the Fourth Proportional to 279,460.58, 419,255.93 and 79,783.70

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Solution

The fourth proportional to 279,460.58, 419,255.93 and 79,783.70 is: 119,694.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,460.58 : 419,255.93 = 79,783.70 : x
  2. Step 2: Convert to fraction form
    279,460.58/419,255.93 = 79,783.70/x
  3. Step 3: Cross multiply
    279,460.58x = 419,255.93 × 79,783.70
  4. Step 4: Simplify right side
    279,460.58x = 33,449,787,445.52
  5. Step 5: Solve for x
    x = 33,449,787,445.52/279,460.58
  6. Step 6: Final answer
    x = 119,694.12

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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.