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Finding the Fourth Proportional to 281,163.43, 388,004.68 and 152,101.86

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Solution

The fourth proportional to 281,163.43, 388,004.68 and 152,101.86 is: 209,900.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,163.43 : 388,004.68 = 152,101.86 : x
  2. Step 2: Convert to fraction form
    281,163.43/388,004.68 = 152,101.86/x
  3. Step 3: Cross multiply
    281,163.43x = 388,004.68 × 152,101.86
  4. Step 4: Simplify right side
    281,163.43x = 59,016,233,578.77
  5. Step 5: Solve for x
    x = 59,016,233,578.77/281,163.43
  6. Step 6: Final answer
    x = 209,900.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.