Home / 209,282.90-313,917.32-90,954.26

Finding the Fourth Proportional to 209,282.90, 313,917.32 and 90,954.26

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Solution

The fourth proportional to 209,282.90, 313,917.32 and 90,954.26 is: 136,428.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,282.90 : 313,917.32 = 90,954.26 : x
  2. Step 2: Convert to fraction form
    209,282.90/313,917.32 = 90,954.26/x
  3. Step 3: Cross multiply
    209,282.90x = 313,917.32 × 90,954.26
  4. Step 4: Simplify right side
    209,282.90x = 28,552,115,517.43
  5. Step 5: Solve for x
    x = 28,552,115,517.43/209,282.90
  6. Step 6: Final answer
    x = 136,428.32

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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.