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Finding the Fourth Proportional to 500,375.45, 750,640.92 and 168,029.21

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Solution

The fourth proportional to 500,375.45, 750,640.92 and 168,029.21 is: 252,069.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,375.45 : 750,640.92 = 168,029.21 : x
  2. Step 2: Convert to fraction form
    500,375.45/750,640.92 = 168,029.21/x
  3. Step 3: Cross multiply
    500,375.45x = 750,640.92 × 168,029.21
  4. Step 4: Simplify right side
    500,375.45x = 126,129,597,028.07
  5. Step 5: Solve for x
    x = 126,129,597,028.07/500,375.45
  6. Step 6: Final answer
    x = 252,069.92

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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.