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Finding the Fourth Proportional to 617,198.37, 851,699.50 and 345,213.72

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Solution

The fourth proportional to 617,198.37, 851,699.50 and 345,213.72 is: 476,375.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,198.37 : 851,699.50 = 345,213.72 : x
  2. Step 2: Convert to fraction form
    617,198.37/851,699.50 = 345,213.72/x
  3. Step 3: Cross multiply
    617,198.37x = 851,699.50 × 345,213.72
  4. Step 4: Simplify right side
    617,198.37x = 294,018,350,998.16
  5. Step 5: Solve for x
    x = 294,018,350,998.16/617,198.37
  6. Step 6: Final answer
    x = 476,375.77

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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.