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Finding the Fourth Proportional to 221,163.40, 331,792.98 and 71,412.04

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Solution

The fourth proportional to 221,163.40, 331,792.98 and 71,412.04 is: 107,133.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,163.40 : 331,792.98 = 71,412.04 : x
  2. Step 2: Convert to fraction form
    221,163.40/331,792.98 = 71,412.04/x
  3. Step 3: Cross multiply
    221,163.40x = 331,792.98 × 71,412.04
  4. Step 4: Simplify right side
    221,163.40x = 23,694,013,559.48
  5. Step 5: Solve for x
    x = 23,694,013,559.48/221,163.40
  6. Step 6: Final answer
    x = 107,133.52

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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.