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Finding the Fourth Proportional to 298,370.67, 447,556.01 and 87,992.21

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Solution

The fourth proportional to 298,370.67, 447,556.01 and 87,992.21 is: 131,988.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,370.67 : 447,556.01 = 87,992.21 : x
  2. Step 2: Convert to fraction form
    298,370.67/447,556.01 = 87,992.21/x
  3. Step 3: Cross multiply
    298,370.67x = 447,556.01 × 87,992.21
  4. Step 4: Simplify right side
    298,370.67x = 39,381,439,740.94
  5. Step 5: Solve for x
    x = 39,381,439,740.94/298,370.67
  6. Step 6: Final answer
    x = 131,988.31

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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.