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Finding the Fourth Proportional to 321,161.10, 481,714.32 and 131,567.34

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Solution

The fourth proportional to 321,161.10, 481,714.32 and 131,567.34 is: 197,339.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,161.10 : 481,714.32 = 131,567.34 : x
  2. Step 2: Convert to fraction form
    321,161.10/481,714.32 = 131,567.34/x
  3. Step 3: Cross multiply
    321,161.10x = 481,714.32 × 131,567.34
  4. Step 4: Simplify right side
    321,161.10x = 63,377,870,202.37
  5. Step 5: Solve for x
    x = 63,377,870,202.37/321,161.10
  6. Step 6: Final answer
    x = 197,339.81

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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.