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Finding the Fourth Proportional to 322,639.84, 483,958.12 and 82,752.72

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Solution

The fourth proportional to 322,639.84, 483,958.12 and 82,752.72 is: 124,128.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,639.84 : 483,958.12 = 82,752.72 : x
  2. Step 2: Convert to fraction form
    322,639.84/483,958.12 = 82,752.72/x
  3. Step 3: Cross multiply
    322,639.84x = 483,958.12 × 82,752.72
  4. Step 4: Simplify right side
    322,639.84x = 40,048,850,796.09
  5. Step 5: Solve for x
    x = 40,048,850,796.09/322,639.84
  6. Step 6: Final answer
    x = 124,128.66

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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.