Home / 220,890.90-331,336.35-115,696.20

Finding the Fourth Proportional to 220,890.90, 331,336.35 and 115,696.20

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Solution

The fourth proportional to 220,890.90, 331,336.35 and 115,696.20 is: 173,544.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,890.90 : 331,336.35 = 115,696.20 : x
  2. Step 2: Convert to fraction form
    220,890.90/331,336.35 = 115,696.20/x
  3. Step 3: Cross multiply
    220,890.90x = 331,336.35 × 115,696.20
  4. Step 4: Simplify right side
    220,890.90x = 38,334,356,616.87
  5. Step 5: Solve for x
    x = 38,334,356,616.87/220,890.90
  6. Step 6: Final answer
    x = 173,544.30

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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.