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Finding the Fourth Proportional to 324,558.65, 486,838.17 and 212,333.15

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Solution

The fourth proportional to 324,558.65, 486,838.17 and 212,333.15 is: 318,499.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,558.65 : 486,838.17 = 212,333.15 : x
  2. Step 2: Convert to fraction form
    324,558.65/486,838.17 = 212,333.15/x
  3. Step 3: Cross multiply
    324,558.65x = 486,838.17 × 212,333.15
  4. Step 4: Simplify right side
    324,558.65x = 103,371,879,742.15
  5. Step 5: Solve for x
    x = 103,371,879,742.15/324,558.65
  6. Step 6: Final answer
    x = 318,499.85

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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.