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Finding the Fourth Proportional to 455,219.60, 682,829.40 and 219,023.60

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Solution

The fourth proportional to 455,219.60, 682,829.40 and 219,023.60 is: 328,535.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,219.60 : 682,829.40 = 219,023.60 : x
  2. Step 2: Convert to fraction form
    455,219.60/682,829.40 = 219,023.60/x
  3. Step 3: Cross multiply
    455,219.60x = 682,829.40 × 219,023.60
  4. Step 4: Simplify right side
    455,219.60x = 149,555,753,373.84
  5. Step 5: Solve for x
    x = 149,555,753,373.84/455,219.60
  6. Step 6: Final answer
    x = 328,535.40

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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.