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Finding the Fourth Proportional to 303,689.52, 455,137.92 and 219,732.48

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Solution

The fourth proportional to 303,689.52, 455,137.92 and 219,732.48 is: 329,311.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,689.52 : 455,137.92 = 219,732.48 : x
  2. Step 2: Convert to fraction form
    303,689.52/455,137.92 = 219,732.48/x
  3. Step 3: Cross multiply
    303,689.52x = 455,137.92 × 219,732.48
  4. Step 4: Simplify right side
    303,689.52x = 100,008,583,903.64
  5. Step 5: Solve for x
    x = 100,008,583,903.64/303,689.52
  6. Step 6: Final answer
    x = 329,311.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.