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Finding the Fourth Proportional to 298,090.80, 446,790.60 and 120,481.20

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Solution

The fourth proportional to 298,090.80, 446,790.60 and 120,481.20 is: 180,582.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,090.80 : 446,790.60 = 120,481.20 : x
  2. Step 2: Convert to fraction form
    298,090.80/446,790.60 = 120,481.20/x
  3. Step 3: Cross multiply
    298,090.80x = 446,790.60 × 120,481.20
  4. Step 4: Simplify right side
    298,090.80x = 53,829,867,636.72
  5. Step 5: Solve for x
    x = 53,829,867,636.72/298,090.80
  6. Step 6: Final answer
    x = 180,582.12

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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.