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Finding the Fourth Proportional to 324,208.85, 485,316.79 and 276,379.16

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Solution

The fourth proportional to 324,208.85, 485,316.79 and 276,379.16 is: 413,719.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,208.85 : 485,316.79 = 276,379.16 : x
  2. Step 2: Convert to fraction form
    324,208.85/485,316.79 = 276,379.16/x
  3. Step 3: Cross multiply
    324,208.85x = 485,316.79 × 276,379.16
  4. Step 4: Simplify right side
    324,208.85x = 134,131,443,636.57
  5. Step 5: Solve for x
    x = 134,131,443,636.57/324,208.85
  6. Step 6: Final answer
    x = 413,719.26

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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.