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Finding the Fourth Proportional to 324,991.38, 448,536.54 and 189,105.78

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Solution

The fourth proportional to 324,991.38, 448,536.54 and 189,105.78 is: 260,994.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,991.38 : 448,536.54 = 189,105.78 : x
  2. Step 2: Convert to fraction form
    324,991.38/448,536.54 = 189,105.78/x
  3. Step 3: Cross multiply
    324,991.38x = 448,536.54 × 189,105.78
  4. Step 4: Simplify right side
    324,991.38x = 84,820,852,255.20
  5. Step 5: Solve for x
    x = 84,820,852,255.20/324,991.38
  6. Step 6: Final answer
    x = 260,994.16

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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.