Home / 378,815.10-522,775.92-206,744.12

Finding the Fourth Proportional to 378,815.10, 522,775.92 and 206,744.12

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Solution

The fourth proportional to 378,815.10, 522,775.92 and 206,744.12 is: 285,312.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,815.10 : 522,775.92 = 206,744.12 : x
  2. Step 2: Convert to fraction form
    378,815.10/522,775.92 = 206,744.12/x
  3. Step 3: Cross multiply
    378,815.10x = 522,775.92 × 206,744.12
  4. Step 4: Simplify right side
    378,815.10x = 108,080,849,129.72
  5. Step 5: Solve for x
    x = 108,080,849,129.72/378,815.10
  6. Step 6: Final answer
    x = 285,312.93

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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.