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Finding the Fourth Proportional to 355,708.79, 490,867.72 and 194,560.37

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Solution

The fourth proportional to 355,708.79, 490,867.72 and 194,560.37 is: 268,487.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,708.79 : 490,867.72 = 194,560.37 : x
  2. Step 2: Convert to fraction form
    355,708.79/490,867.72 = 194,560.37/x
  3. Step 3: Cross multiply
    355,708.79x = 490,867.72 × 194,560.37
  4. Step 4: Simplify right side
    355,708.79x = 95,503,405,965.02
  5. Step 5: Solve for x
    x = 95,503,405,965.02/355,708.79
  6. Step 6: Final answer
    x = 268,487.62

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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.