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Finding the Fourth Proportional to 322,721.48, 445,349.30 and 179,478.45

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Solution

The fourth proportional to 322,721.48, 445,349.30 and 179,478.45 is: 247,676.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,721.48 : 445,349.30 = 179,478.45 : x
  2. Step 2: Convert to fraction form
    322,721.48/445,349.30 = 179,478.45/x
  3. Step 3: Cross multiply
    322,721.48x = 445,349.30 × 179,478.45
  4. Step 4: Simplify right side
    322,721.48x = 79,930,601,175.19
  5. Step 5: Solve for x
    x = 79,930,601,175.19/322,721.48
  6. Step 6: Final answer
    x = 247,676.73

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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.