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Finding the Fourth Proportional to 379,348.44, 569,051.82 and 142,685.88

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Solution

The fourth proportional to 379,348.44, 569,051.82 and 142,685.88 is: 214,039.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,348.44 : 569,051.82 = 142,685.88 : x
  2. Step 2: Convert to fraction form
    379,348.44/569,051.82 = 142,685.88/x
  3. Step 3: Cross multiply
    379,348.44x = 569,051.82 × 142,685.88
  4. Step 4: Simplify right side
    379,348.44x = 81,195,659,702.30
  5. Step 5: Solve for x
    x = 81,195,659,702.30/379,348.44
  6. Step 6: Final answer
    x = 214,039.79

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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.