Home / 378,941.10-522,937.62-209,174

Finding the Fourth Proportional to 378,941.10, 522,937.62 and 209,174

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Solution

The fourth proportional to 378,941.10, 522,937.62 and 209,174 is: 288,659.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,941.10 : 522,937.62 = 209,174 : x
  2. Step 2: Convert to fraction form
    378,941.10/522,937.62 = 209,174/x
  3. Step 3: Cross multiply
    378,941.10x = 522,937.62 × 209,174
  4. Step 4: Simplify right side
    378,941.10x = 109,384,953,725.88
  5. Step 5: Solve for x
    x = 109,384,953,725.88/378,941.10
  6. Step 6: Final answer
    x = 288,659.51

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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.