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Finding the Fourth Proportional to 617,161.88, 851,679.46 and 345,228.48

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Solution

The fourth proportional to 617,161.88, 851,679.46 and 345,228.48 is: 476,413.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,161.88 : 851,679.46 = 345,228.48 : x
  2. Step 2: Convert to fraction form
    617,161.88/851,679.46 = 345,228.48/x
  3. Step 3: Cross multiply
    617,161.88x = 851,679.46 × 345,228.48
  4. Step 4: Simplify right side
    617,161.88x = 294,024,005,854.56
  5. Step 5: Solve for x
    x = 294,024,005,854.56/617,161.88
  6. Step 6: Final answer
    x = 476,413.10

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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.