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Finding the Fourth Proportional to 215,912.53, 297,862.97 and 125,216

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Solution

The fourth proportional to 215,912.53, 297,862.97 and 125,216 is: 172,742.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,912.53 : 297,862.97 = 125,216 : x
  2. Step 2: Convert to fraction form
    215,912.53/297,862.97 = 125,216/x
  3. Step 3: Cross multiply
    215,912.53x = 297,862.97 × 125,216
  4. Step 4: Simplify right side
    215,912.53x = 37,297,209,651.52
  5. Step 5: Solve for x
    x = 37,297,209,651.52/215,912.53
  6. Step 6: Final answer
    x = 172,742.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.