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Finding the Fourth Proportional to 245,801.27, 339,212.21 and 138,375.23

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Solution

The fourth proportional to 245,801.27, 339,212.21 and 138,375.23 is: 190,961.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,801.27 : 339,212.21 = 138,375.23 : x
  2. Step 2: Convert to fraction form
    245,801.27/339,212.21 = 138,375.23/x
  3. Step 3: Cross multiply
    245,801.27x = 339,212.21 × 138,375.23
  4. Step 4: Simplify right side
    245,801.27x = 46,938,565,189.62
  5. Step 5: Solve for x
    x = 46,938,565,189.62/245,801.27
  6. Step 6: Final answer
    x = 190,961.44

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1.5x scale

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.