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Finding the Fourth Proportional to 617,161.72, 851,761.94 and 345,244.72

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Solution

The fourth proportional to 617,161.72, 851,761.94 and 345,244.72 is: 476,481.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,161.72 : 851,761.94 = 345,244.72 : x
  2. Step 2: Convert to fraction form
    617,161.72/851,761.94 = 345,244.72/x
  3. Step 3: Cross multiply
    617,161.72x = 851,761.94 × 345,244.72
  4. Step 4: Simplify right side
    617,161.72x = 294,066,312,481.96
  5. Step 5: Solve for x
    x = 294,066,312,481.96/617,161.72
  6. Step 6: Final answer
    x = 476,481.78

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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.