Home / 208,745.06-312,759.71-140,228.20

Finding the Fourth Proportional to 208,745.06, 312,759.71 and 140,228.20

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Solution

The fourth proportional to 208,745.06, 312,759.71 and 140,228.20 is: 210,101.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,745.06 : 312,759.71 = 140,228.20 : x
  2. Step 2: Convert to fraction form
    208,745.06/312,759.71 = 140,228.20/x
  3. Step 3: Cross multiply
    208,745.06x = 312,759.71 × 140,228.20
  4. Step 4: Simplify right side
    208,745.06x = 43,857,729,682.78
  5. Step 5: Solve for x
    x = 43,857,729,682.78/208,745.06
  6. Step 6: Final answer
    x = 210,101.89

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1.5x scale

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.