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Finding the Fourth Proportional to 235,747.64, 325,274.72 and 138,955.34

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Solution

The fourth proportional to 235,747.64, 325,274.72 and 138,955.34 is: 191,724.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,747.64 : 325,274.72 = 138,955.34 : x
  2. Step 2: Convert to fraction form
    235,747.64/325,274.72 = 138,955.34/x
  3. Step 3: Cross multiply
    235,747.64x = 325,274.72 × 138,955.34
  4. Step 4: Simplify right side
    235,747.64x = 45,198,659,311.00
  5. Step 5: Solve for x
    x = 45,198,659,311.00/235,747.64
  6. Step 6: Final answer
    x = 191,724.76

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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.