Home / 259,428.76-389,293.20-109,659.36

Finding the Fourth Proportional to 259,428.76, 389,293.20 and 109,659.36

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Solution

The fourth proportional to 259,428.76, 389,293.20 and 109,659.36 is: 164,552.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,428.76 : 389,293.20 = 109,659.36 : x
  2. Step 2: Convert to fraction form
    259,428.76/389,293.20 = 109,659.36/x
  3. Step 3: Cross multiply
    259,428.76x = 389,293.20 × 109,659.36
  4. Step 4: Simplify right side
    259,428.76x = 42,689,643,164.35
  5. Step 5: Solve for x
    x = 42,689,643,164.35/259,428.76
  6. Step 6: Final answer
    x = 164,552.47

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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.