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Finding the Fourth Proportional to 451,209.40, 676,814.10 and 170,735.80

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Solution

The fourth proportional to 451,209.40, 676,814.10 and 170,735.80 is: 256,103.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,209.40 : 676,814.10 = 170,735.80 : x
  2. Step 2: Convert to fraction form
    451,209.40/676,814.10 = 170,735.80/x
  3. Step 3: Cross multiply
    451,209.40x = 676,814.10 × 170,735.80
  4. Step 4: Simplify right side
    451,209.40x = 115,556,396,814.78
  5. Step 5: Solve for x
    x = 115,556,396,814.78/451,209.40
  6. Step 6: Final answer
    x = 256,103.70

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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.