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Finding the Fourth Proportional to 315,843.10, 435,813.28 and 179,879.67

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Solution

The fourth proportional to 315,843.10, 435,813.28 and 179,879.67 is: 248,205.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,843.10 : 435,813.28 = 179,879.67 : x
  2. Step 2: Convert to fraction form
    315,843.10/435,813.28 = 179,879.67/x
  3. Step 3: Cross multiply
    315,843.10x = 435,813.28 × 179,879.67
  4. Step 4: Simplify right side
    315,843.10x = 78,393,948,538.32
  5. Step 5: Solve for x
    x = 78,393,948,538.32/315,843.10
  6. Step 6: Final answer
    x = 248,205.36

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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.