Home / 378,971.79-522,967.37-209,202.27

Finding the Fourth Proportional to 378,971.79, 522,967.37 and 209,202.27

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Solution

The fourth proportional to 378,971.79, 522,967.37 and 209,202.27 is: 288,691.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,971.79 : 522,967.37 = 209,202.27 : x
  2. Step 2: Convert to fraction form
    378,971.79/522,967.37 = 209,202.27/x
  3. Step 3: Cross multiply
    378,971.79x = 522,967.37 × 209,202.27
  4. Step 4: Simplify right side
    378,971.79x = 109,405,959,893.92
  5. Step 5: Solve for x
    x = 109,405,959,893.92/378,971.79
  6. Step 6: Final answer
    x = 288,691.57

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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.