Home / 851,355.43-1,276,996.21-211,645.78

Finding the Fourth Proportional to 851,355.43, 1,276,996.21 and 211,645.78

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Solution

The fourth proportional to 851,355.43, 1,276,996.21 and 211,645.78 is: 317,459.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,355.43 : 1,276,996.21 = 211,645.78 : x
  2. Step 2: Convert to fraction form
    851,355.43/1,276,996.21 = 211,645.78/x
  3. Step 3: Cross multiply
    851,355.43x = 1,276,996.21 × 211,645.78
  4. Step 4: Simplify right side
    851,355.43x = 270,270,855,200.89
  5. Step 5: Solve for x
    x = 270,270,855,200.89/851,355.43
  6. Step 6: Final answer
    x = 317,459.48

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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.