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Finding the Fourth Proportional to 253,713.33, 380,539.76 and 66,739.41

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Solution

The fourth proportional to 253,713.33, 380,539.76 and 66,739.41 is: 100,101.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,713.33 : 380,539.76 = 66,739.41 : x
  2. Step 2: Convert to fraction form
    253,713.33/380,539.76 = 66,739.41/x
  3. Step 3: Cross multiply
    253,713.33x = 380,539.76 × 66,739.41
  4. Step 4: Simplify right side
    253,713.33x = 25,396,998,730.24
  5. Step 5: Solve for x
    x = 25,396,998,730.24/253,713.33
  6. Step 6: Final answer
    x = 100,101.16

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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.