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Finding the Fourth Proportional to 455,195.60, 682,793.40 and 218,999.60

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Solution

The fourth proportional to 455,195.60, 682,793.40 and 218,999.60 is: 328,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,195.60 : 682,793.40 = 218,999.60 : x
  2. Step 2: Convert to fraction form
    455,195.60/682,793.40 = 218,999.60/x
  3. Step 3: Cross multiply
    455,195.60x = 682,793.40 × 218,999.60
  4. Step 4: Simplify right side
    455,195.60x = 149,531,481,482.64
  5. Step 5: Solve for x
    x = 149,531,481,482.64/455,195.60
  6. Step 6: Final answer
    x = 328,499.40

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Double scale
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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.