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Finding the Fourth Proportional to 445,816.80, 668,725.20 and 179,440.20

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Solution

The fourth proportional to 445,816.80, 668,725.20 and 179,440.20 is: 269,160.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,816.80 : 668,725.20 = 179,440.20 : x
  2. Step 2: Convert to fraction form
    445,816.80/668,725.20 = 179,440.20/x
  3. Step 3: Cross multiply
    445,816.80x = 668,725.20 × 179,440.20
  4. Step 4: Simplify right side
    445,816.80x = 119,996,183,633.04
  5. Step 5: Solve for x
    x = 119,996,183,633.04/445,816.80
  6. Step 6: Final answer
    x = 269,160.30

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Similar ratio
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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.