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Finding the Fourth Proportional to 279,800.48, 419,766.42 and 111,330.42

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Solution

The fourth proportional to 279,800.48, 419,766.42 and 111,330.42 is: 167,021.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,800.48 : 419,766.42 = 111,330.42 : x
  2. Step 2: Convert to fraction form
    279,800.48/419,766.42 = 111,330.42/x
  3. Step 3: Cross multiply
    279,800.48x = 419,766.42 × 111,330.42
  4. Step 4: Simplify right side
    279,800.48x = 46,732,771,840.50
  5. Step 5: Solve for x
    x = 46,732,771,840.50/279,800.48
  6. Step 6: Final answer
    x = 167,021.77

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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.