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Finding the Fourth Proportional to 330,505.92, 456,101.28 and 196,344

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Solution

The fourth proportional to 330,505.92, 456,101.28 and 196,344 is: 270,956.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,505.92 : 456,101.28 = 196,344 : x
  2. Step 2: Convert to fraction form
    330,505.92/456,101.28 = 196,344/x
  3. Step 3: Cross multiply
    330,505.92x = 456,101.28 × 196,344
  4. Step 4: Simplify right side
    330,505.92x = 89,552,749,720.32
  5. Step 5: Solve for x
    x = 89,552,749,720.32/330,505.92
  6. Step 6: Final answer
    x = 270,956.57

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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.