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Finding the Fourth Proportional to 322,618.99, 445,225.64 and 177,436

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Solution

The fourth proportional to 322,618.99, 445,225.64 and 177,436 is: 244,867.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,618.99 : 445,225.64 = 177,436 : x
  2. Step 2: Convert to fraction form
    322,618.99/445,225.64 = 177,436/x
  3. Step 3: Cross multiply
    322,618.99x = 445,225.64 × 177,436
  4. Step 4: Simplify right side
    322,618.99x = 78,999,056,659.04
  5. Step 5: Solve for x
    x = 78,999,056,659.04/322,618.99
  6. Step 6: Final answer
    x = 244,867.97

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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.