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Finding the Fourth Proportional to 298,667.40, 448,001.10 and 111,654.60

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Solution

The fourth proportional to 298,667.40, 448,001.10 and 111,654.60 is: 167,481.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,667.40 : 448,001.10 = 111,654.60 : x
  2. Step 2: Convert to fraction form
    298,667.40/448,001.10 = 111,654.60/x
  3. Step 3: Cross multiply
    298,667.40x = 448,001.10 × 111,654.60
  4. Step 4: Simplify right side
    298,667.40x = 50,021,383,620.06
  5. Step 5: Solve for x
    x = 50,021,383,620.06/298,667.40
  6. Step 6: Final answer
    x = 167,481.90

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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.