Home / 339,581.87-509,389.73-129,236.11

Finding the Fourth Proportional to 339,581.87, 509,389.73 and 129,236.11

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Solution

The fourth proportional to 339,581.87, 509,389.73 and 129,236.11 is: 193,860.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,581.87 : 509,389.73 = 129,236.11 : x
  2. Step 2: Convert to fraction form
    339,581.87/509,389.73 = 129,236.11/x
  3. Step 3: Cross multiply
    339,581.87x = 509,389.73 × 129,236.11
  4. Step 4: Simplify right side
    339,581.87x = 65,831,546,532.97
  5. Step 5: Solve for x
    x = 65,831,546,532.97/339,581.87
  6. Step 6: Final answer
    x = 193,860.60

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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.