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Finding the Fourth Proportional to 253,661.87, 380,551.12 and 76,172.24

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Solution

The fourth proportional to 253,661.87, 380,551.12 and 76,172.24 is: 114,275.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,661.87 : 380,551.12 = 76,172.24 : x
  2. Step 2: Convert to fraction form
    253,661.87/380,551.12 = 76,172.24/x
  3. Step 3: Cross multiply
    253,661.87x = 380,551.12 × 76,172.24
  4. Step 4: Simplify right side
    253,661.87x = 28,987,431,244.91
  5. Step 5: Solve for x
    x = 28,987,431,244.91/253,661.87
  6. Step 6: Final answer
    x = 114,275.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.