Home / 208,856.40-313,284.60-68,629.20

Finding the Fourth Proportional to 208,856.40, 313,284.60 and 68,629.20

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Solution

The fourth proportional to 208,856.40, 313,284.60 and 68,629.20 is: 102,943.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,856.40 : 313,284.60 = 68,629.20 : x
  2. Step 2: Convert to fraction form
    208,856.40/313,284.60 = 68,629.20/x
  3. Step 3: Cross multiply
    208,856.40x = 313,284.60 × 68,629.20
  4. Step 4: Simplify right side
    208,856.40x = 21,500,471,470.32
  5. Step 5: Solve for x
    x = 21,500,471,470.32/208,856.40
  6. Step 6: Final answer
    x = 102,943.80

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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.