Home / 259,480.38-389,273.09-109,720.43

Finding the Fourth Proportional to 259,480.38, 389,273.09 and 109,720.43

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Solution

The fourth proportional to 259,480.38, 389,273.09 and 109,720.43 is: 164,602.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,480.38 : 389,273.09 = 109,720.43 : x
  2. Step 2: Convert to fraction form
    259,480.38/389,273.09 = 109,720.43/x
  3. Step 3: Cross multiply
    259,480.38x = 389,273.09 × 109,720.43
  4. Step 4: Simplify right side
    259,480.38x = 42,711,208,327.26
  5. Step 5: Solve for x
    x = 42,711,208,327.26/259,480.38
  6. Step 6: Final answer
    x = 164,602.84

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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.