Home / 378,942.69-522,941.03-209,176.82

Finding the Fourth Proportional to 378,942.69, 522,941.03 and 209,176.82

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Solution

The fourth proportional to 378,942.69, 522,941.03 and 209,176.82 is: 288,664.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,942.69 : 522,941.03 = 209,176.82 : x
  2. Step 2: Convert to fraction form
    378,942.69/522,941.03 = 209,176.82/x
  3. Step 3: Cross multiply
    378,942.69x = 522,941.03 × 209,176.82
  4. Step 4: Simplify right side
    378,942.69x = 109,387,141,702.93
  5. Step 5: Solve for x
    x = 109,387,141,702.93/378,942.69
  6. Step 6: Final answer
    x = 288,664.08

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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.