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Finding the Fourth Proportional to 455,136.30, 682,704.45 and 322,166.70

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Solution

The fourth proportional to 455,136.30, 682,704.45 and 322,166.70 is: 483,250.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,136.30 : 682,704.45 = 322,166.70 : x
  2. Step 2: Convert to fraction form
    455,136.30/682,704.45 = 322,166.70/x
  3. Step 3: Cross multiply
    455,136.30x = 682,704.45 × 322,166.70
  4. Step 4: Simplify right side
    455,136.30x = 219,944,639,731.82
  5. Step 5: Solve for x
    x = 219,944,639,731.82/455,136.30
  6. Step 6: Final answer
    x = 483,250.05

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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.