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Finding the Fourth Proportional to 279,701.56, 419,317.98 and 111,115.72

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Solution

The fourth proportional to 279,701.56, 419,317.98 and 111,115.72 is: 166,580.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,701.56 : 419,317.98 = 111,115.72 : x
  2. Step 2: Convert to fraction form
    279,701.56/419,317.98 = 111,115.72/x
  3. Step 3: Cross multiply
    279,701.56x = 419,317.98 × 111,115.72
  4. Step 4: Simplify right side
    279,701.56x = 46,592,819,256.65
  5. Step 5: Solve for x
    x = 46,592,819,256.65/279,701.56
  6. Step 6: Final answer
    x = 166,580.48

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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.