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Finding the Fourth Proportional to 313,239.80, 469,568.10 and 218,469.80

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Solution

The fourth proportional to 313,239.80, 469,568.10 and 218,469.80 is: 327,501.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,239.80 : 469,568.10 = 218,469.80 : x
  2. Step 2: Convert to fraction form
    313,239.80/469,568.10 = 218,469.80/x
  3. Step 3: Cross multiply
    313,239.80x = 469,568.10 × 218,469.80
  4. Step 4: Simplify right side
    313,239.80x = 102,586,448,893.38
  5. Step 5: Solve for x
    x = 102,586,448,893.38/313,239.80
  6. Step 6: Final answer
    x = 327,501.32

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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.