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Finding the Fourth Proportional to 216,796.31, 324,396.21 and 131,101.55

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Solution

The fourth proportional to 216,796.31, 324,396.21 and 131,101.55 is: 196,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,796.31 : 324,396.21 = 131,101.55 : x
  2. Step 2: Convert to fraction form
    216,796.31/324,396.21 = 131,101.55/x
  3. Step 3: Cross multiply
    216,796.31x = 324,396.21 × 131,101.55
  4. Step 4: Simplify right side
    216,796.31x = 42,528,845,945.13
  5. Step 5: Solve for x
    x = 42,528,845,945.13/216,796.31
  6. Step 6: Final answer
    x = 196,169.60

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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.