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Finding the Fourth Proportional to 394,720.60, 592,080.90 and 329,110.60

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Solution

The fourth proportional to 394,720.60, 592,080.90 and 329,110.60 is: 493,665.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,720.60 : 592,080.90 = 329,110.60 : x
  2. Step 2: Convert to fraction form
    394,720.60/592,080.90 = 329,110.60/x
  3. Step 3: Cross multiply
    394,720.60x = 592,080.90 × 329,110.60
  4. Step 4: Simplify right side
    394,720.60x = 194,860,100,247.54
  5. Step 5: Solve for x
    x = 194,860,100,247.54/394,720.60
  6. Step 6: Final answer
    x = 493,665.90

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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.