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Finding the Fourth Proportional to 313,120.70, 432,102.68 and 169,879.69

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Solution

The fourth proportional to 313,120.70, 432,102.68 and 169,879.69 is: 234,431.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,120.70 : 432,102.68 = 169,879.69 : x
  2. Step 2: Convert to fraction form
    313,120.70/432,102.68 = 169,879.69/x
  3. Step 3: Cross multiply
    313,120.70x = 432,102.68 × 169,879.69
  4. Step 4: Simplify right side
    313,120.70x = 73,405,469,654.35
  5. Step 5: Solve for x
    x = 73,405,469,654.35/313,120.70
  6. Step 6: Final answer
    x = 234,431.87

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1.5x scale

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.