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Finding the Fourth Proportional to 322,671.21, 445,380.13 and 215,240.98

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Solution

The fourth proportional to 322,671.21, 445,380.13 and 215,240.98 is: 297,095.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,671.21 : 445,380.13 = 215,240.98 : x
  2. Step 2: Convert to fraction form
    322,671.21/445,380.13 = 215,240.98/x
  3. Step 3: Cross multiply
    322,671.21x = 445,380.13 × 215,240.98
  4. Step 4: Simplify right side
    322,671.21x = 95,864,055,653.73
  5. Step 5: Solve for x
    x = 95,864,055,653.73/322,671.21
  6. Step 6: Final answer
    x = 297,095.16

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1.5x scale

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.