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Finding the Fourth Proportional to 399,090.96, 598,735.80 and 118,600.56

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Solution

The fourth proportional to 399,090.96, 598,735.80 and 118,600.56 is: 177,930.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,090.96 : 598,735.80 = 118,600.56 : x
  2. Step 2: Convert to fraction form
    399,090.96/598,735.80 = 118,600.56/x
  3. Step 3: Cross multiply
    399,090.96x = 598,735.80 × 118,600.56
  4. Step 4: Simplify right side
    399,090.96x = 71,010,401,172.05
  5. Step 5: Solve for x
    x = 71,010,401,172.05/399,090.96
  6. Step 6: Final answer
    x = 177,930.37

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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.