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Finding the Fourth Proportional to 515,858.30, 773,896.80 and 155,999.60

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Solution

The fourth proportional to 515,858.30, 773,896.80 and 155,999.60 is: 234,032.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,858.30 : 773,896.80 = 155,999.60 : x
  2. Step 2: Convert to fraction form
    515,858.30/773,896.80 = 155,999.60/x
  3. Step 3: Cross multiply
    515,858.30x = 773,896.80 × 155,999.60
  4. Step 4: Simplify right side
    515,858.30x = 120,727,591,241.28
  5. Step 5: Solve for x
    x = 120,727,591,241.28/515,858.30
  6. Step 6: Final answer
    x = 234,032.47

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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.