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Finding the Fourth Proportional to 417,976.28, 626,766.76 and 161,928.80

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Solution

The fourth proportional to 417,976.28, 626,766.76 and 161,928.80 is: 242,816.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,976.28 : 626,766.76 = 161,928.80 : x
  2. Step 2: Convert to fraction form
    417,976.28/626,766.76 = 161,928.80/x
  3. Step 3: Cross multiply
    417,976.28x = 626,766.76 × 161,928.80
  4. Step 4: Simplify right side
    417,976.28x = 101,491,589,326.69
  5. Step 5: Solve for x
    x = 101,491,589,326.69/417,976.28
  6. Step 6: Final answer
    x = 242,816.62

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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.