Home / 840,219.82-1,260,323.25-209,129.38

Finding the Fourth Proportional to 840,219.82, 1,260,323.25 and 209,129.38

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Solution

The fourth proportional to 840,219.82, 1,260,323.25 and 209,129.38 is: 313,692.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,219.82 : 1,260,323.25 = 209,129.38 : x
  2. Step 2: Convert to fraction form
    840,219.82/1,260,323.25 = 209,129.38/x
  3. Step 3: Cross multiply
    840,219.82x = 1,260,323.25 × 209,129.38
  4. Step 4: Simplify right side
    840,219.82x = 263,570,619,872.09
  5. Step 5: Solve for x
    x = 263,570,619,872.09/840,219.82
  6. Step 6: Final answer
    x = 313,692.46

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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.