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Finding the Fourth Proportional to 322,728.10, 445,370.50 and 179,488.20

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Solution

The fourth proportional to 322,728.10, 445,370.50 and 179,488.20 is: 247,696.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,728.10 : 445,370.50 = 179,488.20 : x
  2. Step 2: Convert to fraction form
    322,728.10/445,370.50 = 179,488.20/x
  3. Step 3: Cross multiply
    322,728.10x = 445,370.50 × 179,488.20
  4. Step 4: Simplify right side
    322,728.10x = 79,938,751,272.60
  5. Step 5: Solve for x
    x = 79,938,751,272.60/322,728.10
  6. Step 6: Final answer
    x = 247,696.91

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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.