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Finding the Fourth Proportional to 363,990.31, 545,986.85 and 111,269.84

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Solution

The fourth proportional to 363,990.31, 545,986.85 and 111,269.84 is: 166,905.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,990.31 : 545,986.85 = 111,269.84 : x
  2. Step 2: Convert to fraction form
    363,990.31/545,986.85 = 111,269.84/x
  3. Step 3: Cross multiply
    363,990.31x = 545,986.85 × 111,269.84
  4. Step 4: Simplify right side
    363,990.31x = 60,751,866,155.32
  5. Step 5: Solve for x
    x = 60,751,866,155.32/363,990.31
  6. Step 6: Final answer
    x = 166,905.18

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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.