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Finding the Fourth Proportional to 253,371.30, 380,069.19 and 66,382.98

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Solution

The fourth proportional to 253,371.30, 380,069.19 and 66,382.98 is: 99,577.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,371.30 : 380,069.19 = 66,382.98 : x
  2. Step 2: Convert to fraction form
    253,371.30/380,069.19 = 66,382.98/x
  3. Step 3: Cross multiply
    253,371.30x = 380,069.19 × 66,382.98
  4. Step 4: Simplify right side
    253,371.30x = 25,230,125,438.39
  5. Step 5: Solve for x
    x = 25,230,125,438.39/253,371.30
  6. Step 6: Final answer
    x = 99,577.68

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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.