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Finding the Fourth Proportional to 279,810.48, 419,560.20 and 111,317.52

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Solution

The fourth proportional to 279,810.48, 419,560.20 and 111,317.52 is: 166,914.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,810.48 : 419,560.20 = 111,317.52 : x
  2. Step 2: Convert to fraction form
    279,810.48/419,560.20 = 111,317.52/x
  3. Step 3: Cross multiply
    279,810.48x = 419,560.20 × 111,317.52
  4. Step 4: Simplify right side
    279,810.48x = 46,704,400,954.70
  5. Step 5: Solve for x
    x = 46,704,400,954.70/279,810.48
  6. Step 6: Final answer
    x = 166,914.41

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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.