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Finding the Fourth Proportional to 455,205.60, 682,808.40 and 219,009.60

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Solution

The fourth proportional to 455,205.60, 682,808.40 and 219,009.60 is: 328,514.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,205.60 : 682,808.40 = 219,009.60 : x
  2. Step 2: Convert to fraction form
    455,205.60/682,808.40 = 219,009.60/x
  3. Step 3: Cross multiply
    455,205.60x = 682,808.40 × 219,009.60
  4. Step 4: Simplify right side
    455,205.60x = 149,541,594,560.64
  5. Step 5: Solve for x
    x = 149,541,594,560.64/455,205.60
  6. Step 6: Final answer
    x = 328,514.40

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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.