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Finding the Fourth Proportional to 253,382.80, 380,086.44 and 66,394.48

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Solution

The fourth proportional to 253,382.80, 380,086.44 and 66,394.48 is: 99,594.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,382.80 : 380,086.44 = 66,394.48 : x
  2. Step 2: Convert to fraction form
    253,382.80/380,086.44 = 66,394.48/x
  3. Step 3: Cross multiply
    253,382.80x = 380,086.44 × 66,394.48
  4. Step 4: Simplify right side
    253,382.80x = 25,235,641,538.85
  5. Step 5: Solve for x
    x = 25,235,641,538.85/253,382.80
  6. Step 6: Final answer
    x = 99,594.93

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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.