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Finding the Fourth Proportional to 303,344.10, 455,016.15 and 219,363.30

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Solution

The fourth proportional to 303,344.10, 455,016.15 and 219,363.30 is: 329,044.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,344.10 : 455,016.15 = 219,363.30 : x
  2. Step 2: Convert to fraction form
    303,344.10/455,016.15 = 219,363.30/x
  3. Step 3: Cross multiply
    303,344.10x = 455,016.15 × 219,363.30
  4. Step 4: Simplify right side
    303,344.10x = 99,813,844,217.30
  5. Step 5: Solve for x
    x = 99,813,844,217.30/303,344.10
  6. Step 6: Final answer
    x = 329,044.95

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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.