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Finding the Fourth Proportional to 279,890.03, 419,900.96 and 111,419.96

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Solution

The fourth proportional to 279,890.03, 419,900.96 and 111,419.96 is: 167,156.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,890.03 : 419,900.96 = 111,419.96 : x
  2. Step 2: Convert to fraction form
    279,890.03/419,900.96 = 111,419.96/x
  3. Step 3: Cross multiply
    279,890.03x = 419,900.96 × 111,419.96
  4. Step 4: Simplify right side
    279,890.03x = 46,785,346,346.21
  5. Step 5: Solve for x
    x = 46,785,346,346.21/279,890.03
  6. Step 6: Final answer
    x = 167,156.17

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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.