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Finding the Fourth Proportional to 308,562.01, 462,676.60 and 139,990.36

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Solution

The fourth proportional to 308,562.01, 462,676.60 and 139,990.36 is: 209,910.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,562.01 : 462,676.60 = 139,990.36 : x
  2. Step 2: Convert to fraction form
    308,562.01/462,676.60 = 139,990.36/x
  3. Step 3: Cross multiply
    308,562.01x = 462,676.60 × 139,990.36
  4. Step 4: Simplify right side
    308,562.01x = 64,770,260,784.24
  5. Step 5: Solve for x
    x = 64,770,260,784.24/308,562.01
  6. Step 6: Final answer
    x = 209,910.03

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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.