Home / 378,972.57-522,983.28-206,890.81

Finding the Fourth Proportional to 378,972.57, 522,983.28 and 206,890.81

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Solution

The fourth proportional to 378,972.57, 522,983.28 and 206,890.81 is: 285,509.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,972.57 : 522,983.28 = 206,890.81 : x
  2. Step 2: Convert to fraction form
    378,972.57/522,983.28 = 206,890.81/x
  3. Step 3: Cross multiply
    378,972.57x = 522,983.28 × 206,890.81
  4. Step 4: Simplify right side
    378,972.57x = 108,200,433,884.04
  5. Step 5: Solve for x
    x = 108,200,433,884.04/378,972.57
  6. Step 6: Final answer
    x = 285,509.93

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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.