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Finding the Fourth Proportional to 324,076.80, 485,078.40 and 299,193.60

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Solution

The fourth proportional to 324,076.80, 485,078.40 and 299,193.60 is: 447,833.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,076.80 : 485,078.40 = 299,193.60 : x
  2. Step 2: Convert to fraction form
    324,076.80/485,078.40 = 299,193.60/x
  3. Step 3: Cross multiply
    324,076.80x = 485,078.40 × 299,193.60
  4. Step 4: Simplify right side
    324,076.80x = 145,132,352,778.24
  5. Step 5: Solve for x
    x = 145,132,352,778.24/324,076.80
  6. Step 6: Final answer
    x = 447,833.21

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1.5x scale

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.