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Finding the Fourth Proportional to 515,912.60, 773,609.70 and 235,112.60

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Solution

The fourth proportional to 515,912.60, 773,609.70 and 235,112.60 is: 352,550.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,912.60 : 773,609.70 = 235,112.60 : x
  2. Step 2: Convert to fraction form
    515,912.60/773,609.70 = 235,112.60/x
  3. Step 3: Cross multiply
    515,912.60x = 773,609.70 × 235,112.60
  4. Step 4: Simplify right side
    515,912.60x = 181,885,387,952.22
  5. Step 5: Solve for x
    x = 181,885,387,952.22/515,912.60
  6. Step 6: Final answer
    x = 352,550.78

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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.