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Finding the Fourth Proportional to 188,818.80, 260,539.46 and 108,231.50

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Solution

The fourth proportional to 188,818.80, 260,539.46 and 108,231.50 is: 149,342.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,818.80 : 260,539.46 = 108,231.50 : x
  2. Step 2: Convert to fraction form
    188,818.80/260,539.46 = 108,231.50/x
  3. Step 3: Cross multiply
    188,818.80x = 260,539.46 × 108,231.50
  4. Step 4: Simplify right side
    188,818.80x = 28,198,576,564.99
  5. Step 5: Solve for x
    x = 28,198,576,564.99/188,818.80
  6. Step 6: Final answer
    x = 149,342.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.