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Finding the Fourth Proportional to 300,865.98, 451,298.97 and 123,456.54

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Solution

The fourth proportional to 300,865.98, 451,298.97 and 123,456.54 is: 185,184.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,865.98 : 451,298.97 = 123,456.54 : x
  2. Step 2: Convert to fraction form
    300,865.98/451,298.97 = 123,456.54/x
  3. Step 3: Cross multiply
    300,865.98x = 451,298.97 × 123,456.54
  4. Step 4: Simplify right side
    300,865.98x = 55,715,809,341.76
  5. Step 5: Solve for x
    x = 55,715,809,341.76/300,865.98
  6. Step 6: Final answer
    x = 185,184.81

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1.5x scale

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.