Home / 378,945.27-522,941.27-209,175.75

Finding the Fourth Proportional to 378,945.27, 522,941.27 and 209,175.75

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Solution

The fourth proportional to 378,945.27, 522,941.27 and 209,175.75 is: 288,660.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,945.27 : 522,941.27 = 209,175.75 : x
  2. Step 2: Convert to fraction form
    378,945.27/522,941.27 = 209,175.75/x
  3. Step 3: Cross multiply
    378,945.27x = 522,941.27 × 209,175.75
  4. Step 4: Simplify right side
    378,945.27x = 109,386,631,312.32
  5. Step 5: Solve for x
    x = 109,386,631,312.32/378,945.27
  6. Step 6: Final answer
    x = 288,660.76

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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.