Home / 208,986.40-313,479.60-51,216.40

Finding the Fourth Proportional to 208,986.40, 313,479.60 and 51,216.40

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Solution

The fourth proportional to 208,986.40, 313,479.60 and 51,216.40 is: 76,824.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,986.40 : 313,479.60 = 51,216.40 : x
  2. Step 2: Convert to fraction form
    208,986.40/313,479.60 = 51,216.40/x
  3. Step 3: Cross multiply
    208,986.40x = 313,479.60 × 51,216.40
  4. Step 4: Simplify right side
    208,986.40x = 16,055,296,585.44
  5. Step 5: Solve for x
    x = 16,055,296,585.44/208,986.40
  6. Step 6: Final answer
    x = 76,824.60

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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.