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Finding the Fourth Proportional to 379,652.67, 523,904.09 and 218,512.89

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Solution

The fourth proportional to 379,652.67, 523,904.09 and 218,512.89 is: 301,538.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,652.67 : 523,904.09 = 218,512.89 : x
  2. Step 2: Convert to fraction form
    379,652.67/523,904.09 = 218,512.89/x
  3. Step 3: Cross multiply
    379,652.67x = 523,904.09 × 218,512.89
  4. Step 4: Simplify right side
    379,652.67x = 114,479,795,696.16
  5. Step 5: Solve for x
    x = 114,479,795,696.16/379,652.67
  6. Step 6: Final answer
    x = 301,538.23

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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.