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Finding the Fourth Proportional to 324,645.20, 486,636.60 and 219,474.80

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Solution

The fourth proportional to 324,645.20, 486,636.60 and 219,474.80 is: 328,988.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,645.20 : 486,636.60 = 219,474.80 : x
  2. Step 2: Convert to fraction form
    324,645.20/486,636.60 = 219,474.80/x
  3. Step 3: Cross multiply
    324,645.20x = 486,636.60 × 219,474.80
  4. Step 4: Simplify right side
    324,645.20x = 106,804,470,457.68
  5. Step 5: Solve for x
    x = 106,804,470,457.68/324,645.20
  6. Step 6: Final answer
    x = 328,988.29

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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.