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Finding the Fourth Proportional to 235,299.27, 324,720.83 and 138,485.64

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Solution

The fourth proportional to 235,299.27, 324,720.83 and 138,485.64 is: 191,114.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,299.27 : 324,720.83 = 138,485.64 : x
  2. Step 2: Convert to fraction form
    235,299.27/324,720.83 = 138,485.64/x
  3. Step 3: Cross multiply
    235,299.27x = 324,720.83 × 138,485.64
  4. Step 4: Simplify right side
    235,299.27x = 44,969,171,271.45
  5. Step 5: Solve for x
    x = 44,969,171,271.45/235,299.27
  6. Step 6: Final answer
    x = 191,114.79

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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.