Home / 345,719.22-518,535.09-135,504.78

Finding the Fourth Proportional to 345,719.22, 518,535.09 and 135,504.78

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Solution

The fourth proportional to 345,719.22, 518,535.09 and 135,504.78 is: 203,240.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,719.22 : 518,535.09 = 135,504.78 : x
  2. Step 2: Convert to fraction form
    345,719.22/518,535.09 = 135,504.78/x
  3. Step 3: Cross multiply
    345,719.22x = 518,535.09 × 135,504.78
  4. Step 4: Simplify right side
    345,719.22x = 70,263,983,292.73
  5. Step 5: Solve for x
    x = 70,263,983,292.73/345,719.22
  6. Step 6: Final answer
    x = 203,240.03

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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.