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Finding the Fourth Proportional to 455,057.20, 682,585.80 and 277,910.20

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Solution

The fourth proportional to 455,057.20, 682,585.80 and 277,910.20 is: 416,865.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,057.20 : 682,585.80 = 277,910.20 : x
  2. Step 2: Convert to fraction form
    455,057.20/682,585.80 = 277,910.20/x
  3. Step 3: Cross multiply
    455,057.20x = 682,585.80 × 277,910.20
  4. Step 4: Simplify right side
    455,057.20x = 189,697,556,195.16
  5. Step 5: Solve for x
    x = 189,697,556,195.16/455,057.20
  6. Step 6: Final answer
    x = 416,865.30

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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.