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Finding the Fourth Proportional to 324,084.80, 485,090.40 and 299,201.60

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Solution

The fourth proportional to 324,084.80, 485,090.40 and 299,201.60 is: 447,845.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,084.80 : 485,090.40 = 299,201.60 : x
  2. Step 2: Convert to fraction form
    324,084.80/485,090.40 = 299,201.60/x
  3. Step 3: Cross multiply
    324,084.80x = 485,090.40 × 299,201.60
  4. Step 4: Simplify right side
    324,084.80x = 145,139,823,824.64
  5. Step 5: Solve for x
    x = 145,139,823,824.64/324,084.80
  6. Step 6: Final answer
    x = 447,845.21

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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.