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Finding the Fourth Proportional to 379,540.69, 523,766.67 and 218,392.54

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Solution

The fourth proportional to 379,540.69, 523,766.67 and 218,392.54 is: 301,382.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,540.69 : 523,766.67 = 218,392.54 : x
  2. Step 2: Convert to fraction form
    379,540.69/523,766.67 = 218,392.54/x
  3. Step 3: Cross multiply
    379,540.69x = 523,766.67 × 218,392.54
  4. Step 4: Simplify right side
    379,540.69x = 114,386,733,428.64
  5. Step 5: Solve for x
    x = 114,386,733,428.64/379,540.69
  6. Step 6: Final answer
    x = 301,382.00

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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.