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Finding the Fourth Proportional to 303,456, 418,769.28 and 169,320.96

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Solution

The fourth proportional to 303,456, 418,769.28 and 169,320.96 is: 233,662.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,456 : 418,769.28 = 169,320.96 : x
  2. Step 2: Convert to fraction form
    303,456/418,769.28 = 169,320.96/x
  3. Step 3: Cross multiply
    303,456x = 418,769.28 × 169,320.96
  4. Step 4: Simplify right side
    303,456x = 70,906,416,508.11
  5. Step 5: Solve for x
    x = 70,906,416,508.11/303,456
  6. Step 6: Final answer
    x = 233,662.92

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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.