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Finding the Fourth Proportional to 262,679.21, 393,776.50 and 102,863.98

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Solution

The fourth proportional to 262,679.21, 393,776.50 and 102,863.98 is: 154,201.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,679.21 : 393,776.50 = 102,863.98 : x
  2. Step 2: Convert to fraction form
    262,679.21/393,776.50 = 102,863.98/x
  3. Step 3: Cross multiply
    262,679.21x = 393,776.50 × 102,863.98
  4. Step 4: Simplify right side
    262,679.21x = 40,505,418,020.47
  5. Step 5: Solve for x
    x = 40,505,418,020.47/262,679.21
  6. Step 6: Final answer
    x = 154,201.08

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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.