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Finding the Fourth Proportional to 275,332.80, 412,950 and 72,930.36

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Solution

The fourth proportional to 275,332.80, 412,950 and 72,930.36 is: 109,382.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,332.80 : 412,950 = 72,930.36 : x
  2. Step 2: Convert to fraction form
    275,332.80/412,950 = 72,930.36/x
  3. Step 3: Cross multiply
    275,332.80x = 412,950 × 72,930.36
  4. Step 4: Simplify right side
    275,332.80x = 30,116,592,162
  5. Step 5: Solve for x
    x = 30,116,592,162/275,332.80
  6. Step 6: Final answer
    x = 109,382.51

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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.