Home / 259,740.70-389,623.20-82,261.60

Finding the Fourth Proportional to 259,740.70, 389,623.20 and 82,261.60

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Solution

The fourth proportional to 259,740.70, 389,623.20 and 82,261.60 is: 123,396.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,740.70 : 389,623.20 = 82,261.60 : x
  2. Step 2: Convert to fraction form
    259,740.70/389,623.20 = 82,261.60/x
  3. Step 3: Cross multiply
    259,740.70x = 389,623.20 × 82,261.60
  4. Step 4: Simplify right side
    259,740.70x = 32,051,027,829.12
  5. Step 5: Solve for x
    x = 32,051,027,829.12/259,740.70
  6. Step 6: Final answer
    x = 123,396.25

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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.