Home / 345,991.36-518,942.40-109,357.96

Finding the Fourth Proportional to 345,991.36, 518,942.40 and 109,357.96

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Solution

The fourth proportional to 345,991.36, 518,942.40 and 109,357.96 is: 164,022.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,991.36 : 518,942.40 = 109,357.96 : x
  2. Step 2: Convert to fraction form
    345,991.36/518,942.40 = 109,357.96/x
  3. Step 3: Cross multiply
    345,991.36x = 518,942.40 × 109,357.96
  4. Step 4: Simplify right side
    345,991.36x = 56,750,482,221.50
  5. Step 5: Solve for x
    x = 56,750,482,221.50/345,991.36
  6. Step 6: Final answer
    x = 164,022.83

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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.