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Finding the Fourth Proportional to 262,172.69, 393,267.74 and 72,634.96

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Solution

The fourth proportional to 262,172.69, 393,267.74 and 72,634.96 is: 108,954.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,172.69 : 393,267.74 = 72,634.96 : x
  2. Step 2: Convert to fraction form
    262,172.69/393,267.74 = 72,634.96/x
  3. Step 3: Cross multiply
    262,172.69x = 393,267.74 × 72,634.96
  4. Step 4: Simplify right side
    262,172.69x = 28,564,985,217.85
  5. Step 5: Solve for x
    x = 28,564,985,217.85/262,172.69
  6. Step 6: Final answer
    x = 108,954.85

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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.