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Finding the Fourth Proportional to 303,511.20, 418,845.45 and 169,375.20

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Solution

The fourth proportional to 303,511.20, 418,845.45 and 169,375.20 is: 233,737.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,511.20 : 418,845.45 = 169,375.20 : x
  2. Step 2: Convert to fraction form
    303,511.20/418,845.45 = 169,375.20/x
  3. Step 3: Cross multiply
    303,511.20x = 418,845.45 × 169,375.20
  4. Step 4: Simplify right side
    303,511.20x = 70,942,031,862.84
  5. Step 5: Solve for x
    x = 70,942,031,862.84/303,511.20
  6. Step 6: Final answer
    x = 233,737.77

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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.