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Finding the Fourth Proportional to 297,620.64, 410,719.50 and 161,655.90

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Solution

The fourth proportional to 297,620.64, 410,719.50 and 161,655.90 is: 223,086.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,620.64 : 410,719.50 = 161,655.90 : x
  2. Step 2: Convert to fraction form
    297,620.64/410,719.50 = 161,655.90/x
  3. Step 3: Cross multiply
    297,620.64x = 410,719.50 × 161,655.90
  4. Step 4: Simplify right side
    297,620.64x = 66,395,230,420.05
  5. Step 5: Solve for x
    x = 66,395,230,420.05/297,620.64
  6. Step 6: Final answer
    x = 223,086.78

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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.