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Finding the Fourth Proportional to 379,796.80, 569,234.40 and 169,211.20

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Solution

The fourth proportional to 379,796.80, 569,234.40 and 169,211.20 is: 253,611.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,796.80 : 569,234.40 = 169,211.20 : x
  2. Step 2: Convert to fraction form
    379,796.80/569,234.40 = 169,211.20/x
  3. Step 3: Cross multiply
    379,796.80x = 569,234.40 × 169,211.20
  4. Step 4: Simplify right side
    379,796.80x = 96,320,835,905.28
  5. Step 5: Solve for x
    x = 96,320,835,905.28/379,796.80
  6. Step 6: Final answer
    x = 253,611.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.