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Finding the Fourth Proportional to 445,012.80, 667,723.30 and 242,671.56

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Solution

The fourth proportional to 445,012.80, 667,723.30 and 242,671.56 is: 364,118.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,012.80 : 667,723.30 = 242,671.56 : x
  2. Step 2: Convert to fraction form
    445,012.80/667,723.30 = 242,671.56/x
  3. Step 3: Cross multiply
    445,012.80x = 667,723.30 × 242,671.56
  4. Step 4: Simplify right side
    445,012.80x = 162,037,454,859.35
  5. Step 5: Solve for x
    x = 162,037,454,859.35/445,012.80
  6. Step 6: Final answer
    x = 364,118.64

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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.