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Finding the Fourth Proportional to 303,460.05, 455,682.15 and 219,807.30

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Solution

The fourth proportional to 303,460.05, 455,682.15 and 219,807.30 is: 330,067.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,460.05 : 455,682.15 = 219,807.30 : x
  2. Step 2: Convert to fraction form
    303,460.05/455,682.15 = 219,807.30/x
  3. Step 3: Cross multiply
    303,460.05x = 455,682.15 × 219,807.30
  4. Step 4: Simplify right side
    303,460.05x = 100,162,263,049.70
  5. Step 5: Solve for x
    x = 100,162,263,049.70/303,460.05
  6. Step 6: Final answer
    x = 330,067.38

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1.5x scale

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.