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Finding the Fourth Proportional to 379,277.61, 568,999.52 and 142,620.30

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Solution

The fourth proportional to 379,277.61, 568,999.52 and 142,620.30 is: 213,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,277.61 : 568,999.52 = 142,620.30 : x
  2. Step 2: Convert to fraction form
    379,277.61/568,999.52 = 142,620.30/x
  3. Step 3: Cross multiply
    379,277.61x = 568,999.52 × 142,620.30
  4. Step 4: Simplify right side
    379,277.61x = 81,150,881,529.15
  5. Step 5: Solve for x
    x = 81,150,881,529.15/379,277.61
  6. Step 6: Final answer
    x = 213,961.70

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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.