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Finding the Fourth Proportional to 324,689.80, 447,781.80 and 203,842.35

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Solution

The fourth proportional to 324,689.80, 447,781.80 and 203,842.35 is: 281,120.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,689.80 : 447,781.80 = 203,842.35 : x
  2. Step 2: Convert to fraction form
    324,689.80/447,781.80 = 203,842.35/x
  3. Step 3: Cross multiply
    324,689.80x = 447,781.80 × 203,842.35
  4. Step 4: Simplify right side
    324,689.80x = 91,276,894,399.23
  5. Step 5: Solve for x
    x = 91,276,894,399.23/324,689.80
  6. Step 6: Final answer
    x = 281,120.30

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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.