Home / 208,919.31-313,441.47-82,577.40

Finding the Fourth Proportional to 208,919.31, 313,441.47 and 82,577.40

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Solution

The fourth proportional to 208,919.31, 313,441.47 and 82,577.40 is: 123,890.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,919.31 : 313,441.47 = 82,577.40 : x
  2. Step 2: Convert to fraction form
    208,919.31/313,441.47 = 82,577.40/x
  3. Step 3: Cross multiply
    208,919.31x = 313,441.47 × 82,577.40
  4. Step 4: Simplify right side
    208,919.31x = 25,883,181,644.78
  5. Step 5: Solve for x
    x = 25,883,181,644.78/208,919.31
  6. Step 6: Final answer
    x = 123,890.81

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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.