Home / 378,899.92-522,844.62-209,123.12

Finding the Fourth Proportional to 378,899.92, 522,844.62 and 209,123.12

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Solution

The fourth proportional to 378,899.92, 522,844.62 and 209,123.12 is: 288,569.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,899.92 : 522,844.62 = 209,123.12 : x
  2. Step 2: Convert to fraction form
    378,899.92/522,844.62 = 209,123.12/x
  3. Step 3: Cross multiply
    378,899.92x = 522,844.62 × 209,123.12
  4. Step 4: Simplify right side
    378,899.92x = 109,338,898,209.61
  5. Step 5: Solve for x
    x = 109,338,898,209.61/378,899.92
  6. Step 6: Final answer
    x = 288,569.34

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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.