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Finding the Fourth Proportional to 455,205.80, 682,808.70 and 155,659.70

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Solution

The fourth proportional to 455,205.80, 682,808.70 and 155,659.70 is: 233,489.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,205.80 : 682,808.70 = 155,659.70 : x
  2. Step 2: Convert to fraction form
    455,205.80/682,808.70 = 155,659.70/x
  3. Step 3: Cross multiply
    455,205.80x = 682,808.70 × 155,659.70
  4. Step 4: Simplify right side
    455,205.80x = 106,285,797,399.39
  5. Step 5: Solve for x
    x = 106,285,797,399.39/455,205.80
  6. Step 6: Final answer
    x = 233,489.55

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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.