Home / 268,453.70-402,682.97-81,465.20

Finding the Fourth Proportional to 268,453.70, 402,682.97 and 81,465.20

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Solution

The fourth proportional to 268,453.70, 402,682.97 and 81,465.20 is: 122,198.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,453.70 : 402,682.97 = 81,465.20 : x
  2. Step 2: Convert to fraction form
    268,453.70/402,682.97 = 81,465.20/x
  3. Step 3: Cross multiply
    268,453.70x = 402,682.97 × 81,465.20
  4. Step 4: Simplify right side
    268,453.70x = 32,804,648,687.64
  5. Step 5: Solve for x
    x = 32,804,648,687.64/268,453.70
  6. Step 6: Final answer
    x = 122,198.53

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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.