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Finding the Fourth Proportional to 279,410.64, 419,111.85 and 69,048.58

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Solution

The fourth proportional to 279,410.64, 419,111.85 and 69,048.58 is: 103,571.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,410.64 : 419,111.85 = 69,048.58 : x
  2. Step 2: Convert to fraction form
    279,410.64/419,111.85 = 69,048.58/x
  3. Step 3: Cross multiply
    279,410.64x = 419,111.85 × 69,048.58
  4. Step 4: Simplify right side
    279,410.64x = 28,939,078,103.67
  5. Step 5: Solve for x
    x = 28,939,078,103.67/279,410.64
  6. Step 6: Final answer
    x = 103,571.85

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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.