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Finding the Fourth Proportional to 326,740.20, 490,134.60 and 116,350.80

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Solution

The fourth proportional to 326,740.20, 490,134.60 and 116,350.80 is: 174,534.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,740.20 : 490,134.60 = 116,350.80 : x
  2. Step 2: Convert to fraction form
    326,740.20/490,134.60 = 116,350.80/x
  3. Step 3: Cross multiply
    326,740.20x = 490,134.60 × 116,350.80
  4. Step 4: Simplify right side
    326,740.20x = 57,027,552,817.68
  5. Step 5: Solve for x
    x = 57,027,552,817.68/326,740.20
  6. Step 6: Final answer
    x = 174,534.85

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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.