Home / 259,719.60-389,287.80-109,934.40

Finding the Fourth Proportional to 259,719.60, 389,287.80 and 109,934.40

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Solution

The fourth proportional to 259,719.60, 389,287.80 and 109,934.40 is: 164,778.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,719.60 : 389,287.80 = 109,934.40 : x
  2. Step 2: Convert to fraction form
    259,719.60/389,287.80 = 109,934.40/x
  3. Step 3: Cross multiply
    259,719.60x = 389,287.80 × 109,934.40
  4. Step 4: Simplify right side
    259,719.60x = 42,796,120,720.32
  5. Step 5: Solve for x
    x = 42,796,120,720.32/259,719.60
  6. Step 6: Final answer
    x = 164,778.17

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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.