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Finding the Fourth Proportional to 324,718.20, 447,820.68 and 203,870.64

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Solution

The fourth proportional to 324,718.20, 447,820.68 and 203,870.64 is: 281,159.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,718.20 : 447,820.68 = 203,870.64 : x
  2. Step 2: Convert to fraction form
    324,718.20/447,820.68 = 203,870.64/x
  3. Step 3: Cross multiply
    324,718.20x = 447,820.68 × 203,870.64
  4. Step 4: Simplify right side
    324,718.20x = 91,297,488,636.84
  5. Step 5: Solve for x
    x = 91,297,488,636.84/324,718.20
  6. Step 6: Final answer
    x = 281,159.14

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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.