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Finding the Fourth Proportional to 322,770.75, 445,423.64 and 188,634.75

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Solution

The fourth proportional to 322,770.75, 445,423.64 and 188,634.75 is: 260,315.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,770.75 : 445,423.64 = 188,634.75 : x
  2. Step 2: Convert to fraction form
    322,770.75/445,423.64 = 188,634.75/x
  3. Step 3: Cross multiply
    322,770.75x = 445,423.64 × 188,634.75
  4. Step 4: Simplify right side
    322,770.75x = 84,022,376,032.32
  5. Step 5: Solve for x
    x = 84,022,376,032.32/322,770.75
  6. Step 6: Final answer
    x = 260,315.96

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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.