Home / 259,741.40-389,612.10-111,997.40

Finding the Fourth Proportional to 259,741.40, 389,612.10 and 111,997.40

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Solution

The fourth proportional to 259,741.40, 389,612.10 and 111,997.40 is: 167,996.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,741.40 : 389,612.10 = 111,997.40 : x
  2. Step 2: Convert to fraction form
    259,741.40/389,612.10 = 111,997.40/x
  3. Step 3: Cross multiply
    259,741.40x = 389,612.10 × 111,997.40
  4. Step 4: Simplify right side
    259,741.40x = 43,635,542,208.54
  5. Step 5: Solve for x
    x = 43,635,542,208.54/259,741.40
  6. Step 6: Final answer
    x = 167,996.10

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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.