Home / 378,942.60-522,936.72-209,173.08

Finding the Fourth Proportional to 378,942.60, 522,936.72 and 209,173.08

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Solution

The fourth proportional to 378,942.60, 522,936.72 and 209,173.08 is: 288,656.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,942.60 : 522,936.72 = 209,173.08 : x
  2. Step 2: Convert to fraction form
    378,942.60/522,936.72 = 209,173.08/x
  3. Step 3: Cross multiply
    378,942.60x = 522,936.72 × 209,173.08
  4. Step 4: Simplify right side
    378,942.60x = 109,384,284,367.50
  5. Step 5: Solve for x
    x = 109,384,284,367.50/378,942.60
  6. Step 6: Final answer
    x = 288,656.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.