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Finding the Fourth Proportional to 379,003.06, 523,111.96 and 217,951.02

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Solution

The fourth proportional to 379,003.06, 523,111.96 and 217,951.02 is: 300,822.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,003.06 : 523,111.96 = 217,951.02 : x
  2. Step 2: Convert to fraction form
    379,003.06/523,111.96 = 217,951.02/x
  3. Step 3: Cross multiply
    379,003.06x = 523,111.96 × 217,951.02
  4. Step 4: Simplify right side
    379,003.06x = 114,012,785,528.64
  5. Step 5: Solve for x
    x = 114,012,785,528.64/379,003.06
  6. Step 6: Final answer
    x = 300,822.86

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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.