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Finding the Fourth Proportional to 330,198.75, 455,674.28 and 179,295.75

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Solution

The fourth proportional to 330,198.75, 455,674.28 and 179,295.75 is: 247,428.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,198.75 : 455,674.28 = 179,295.75 : x
  2. Step 2: Convert to fraction form
    330,198.75/455,674.28 = 179,295.75/x
  3. Step 3: Cross multiply
    330,198.75x = 455,674.28 × 179,295.75
  4. Step 4: Simplify right side
    330,198.75x = 81,700,460,891.83
  5. Step 5: Solve for x
    x = 81,700,460,891.83/330,198.75
  6. Step 6: Final answer
    x = 247,428.14

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1.5x scale

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.