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Finding the Fourth Proportional to 279,495.36, 419,178.24 and 79,810.56

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Solution

The fourth proportional to 279,495.36, 419,178.24 and 79,810.56 is: 119,697.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,495.36 : 419,178.24 = 79,810.56 : x
  2. Step 2: Convert to fraction form
    279,495.36/419,178.24 = 79,810.56/x
  3. Step 3: Cross multiply
    279,495.36x = 419,178.24 × 79,810.56
  4. Step 4: Simplify right side
    279,495.36x = 33,454,850,074.21
  5. Step 5: Solve for x
    x = 33,454,850,074.21/279,495.36
  6. Step 6: Final answer
    x = 119,697.34

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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.