Home / 378,972.30-522,989.70-206,897.52

Finding the Fourth Proportional to 378,972.30, 522,989.70 and 206,897.52

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Solution

The fourth proportional to 378,972.30, 522,989.70 and 206,897.52 is: 285,522.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,972.30 : 522,989.70 = 206,897.52 : x
  2. Step 2: Convert to fraction form
    378,972.30/522,989.70 = 206,897.52/x
  3. Step 3: Cross multiply
    378,972.30x = 522,989.70 × 206,897.52
  4. Step 4: Simplify right side
    378,972.30x = 108,205,273,100.89
  5. Step 5: Solve for x
    x = 108,205,273,100.89/378,972.30
  6. Step 6: Final answer
    x = 285,522.91

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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.