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Finding the Fourth Proportional to 320,391.44, 480,660.18 and 170,552.78

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Solution

The fourth proportional to 320,391.44, 480,660.18 and 170,552.78 is: 255,868.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,391.44 : 480,660.18 = 170,552.78 : x
  2. Step 2: Convert to fraction form
    320,391.44/480,660.18 = 170,552.78/x
  3. Step 3: Cross multiply
    320,391.44x = 480,660.18 × 170,552.78
  4. Step 4: Simplify right side
    320,391.44x = 81,977,929,934.30
  5. Step 5: Solve for x
    x = 81,977,929,934.30/320,391.44
  6. Step 6: Final answer
    x = 255,868.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.