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Finding the Fourth Proportional to 481,137.40, 721,878.90 and 200,740.60

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Solution

The fourth proportional to 481,137.40, 721,878.90 and 200,740.60 is: 301,183.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,137.40 : 721,878.90 = 200,740.60 : x
  2. Step 2: Convert to fraction form
    481,137.40/721,878.90 = 200,740.60/x
  3. Step 3: Cross multiply
    481,137.40x = 721,878.90 × 200,740.60
  4. Step 4: Simplify right side
    481,137.40x = 144,910,403,513.34
  5. Step 5: Solve for x
    x = 144,910,403,513.34/481,137.40
  6. Step 6: Final answer
    x = 301,183.00

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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.