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Finding the Fourth Proportional to 324,063.62, 447,136.16 and 188,018.72

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Solution

The fourth proportional to 324,063.62, 447,136.16 and 188,018.72 is: 259,424.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,063.62 : 447,136.16 = 188,018.72 : x
  2. Step 2: Convert to fraction form
    324,063.62/447,136.16 = 188,018.72/x
  3. Step 3: Cross multiply
    324,063.62x = 447,136.16 × 188,018.72
  4. Step 4: Simplify right side
    324,063.62x = 84,069,968,468.92
  5. Step 5: Solve for x
    x = 84,069,968,468.92/324,063.62
  6. Step 6: Final answer
    x = 259,424.27

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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.