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Finding the Fourth Proportional to 515,644.26, 773,487.32 and 245,633.60

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Solution

The fourth proportional to 515,644.26, 773,487.32 and 245,633.60 is: 368,460.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,644.26 : 773,487.32 = 245,633.60 : x
  2. Step 2: Convert to fraction form
    515,644.26/773,487.32 = 245,633.60/x
  3. Step 3: Cross multiply
    515,644.26x = 773,487.32 × 245,633.60
  4. Step 4: Simplify right side
    515,644.26x = 189,994,469,870.35
  5. Step 5: Solve for x
    x = 189,994,469,870.35/515,644.26
  6. Step 6: Final answer
    x = 368,460.36

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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.