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Finding the Fourth Proportional to 279,703.56, 419,320.98 and 111,117.72

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Solution

The fourth proportional to 279,703.56, 419,320.98 and 111,117.72 is: 166,583.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,703.56 : 419,320.98 = 111,117.72 : x
  2. Step 2: Convert to fraction form
    279,703.56/419,320.98 = 111,117.72/x
  3. Step 3: Cross multiply
    279,703.56x = 419,320.98 × 111,117.72
  4. Step 4: Simplify right side
    279,703.56x = 46,593,991,245.77
  5. Step 5: Solve for x
    x = 46,593,991,245.77/279,703.56
  6. Step 6: Final answer
    x = 166,583.48

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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.