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Finding the Fourth Proportional to 455,220.60, 682,830.90 and 219,024.60

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Solution

The fourth proportional to 455,220.60, 682,830.90 and 219,024.60 is: 328,536.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,220.60 : 682,830.90 = 219,024.60 : x
  2. Step 2: Convert to fraction form
    455,220.60/682,830.90 = 219,024.60/x
  3. Step 3: Cross multiply
    455,220.60x = 682,830.90 × 219,024.60
  4. Step 4: Simplify right side
    455,220.60x = 149,556,764,740.14
  5. Step 5: Solve for x
    x = 149,556,764,740.14/455,220.60
  6. Step 6: Final answer
    x = 328,536.90

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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.