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Finding the Fourth Proportional to 306,090.20, 459,135.30 and 231,440.60

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Solution

The fourth proportional to 306,090.20, 459,135.30 and 231,440.60 is: 347,160.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,090.20 : 459,135.30 = 231,440.60 : x
  2. Step 2: Convert to fraction form
    306,090.20/459,135.30 = 231,440.60/x
  3. Step 3: Cross multiply
    306,090.20x = 459,135.30 × 231,440.60
  4. Step 4: Simplify right side
    306,090.20x = 106,262,549,313.18
  5. Step 5: Solve for x
    x = 106,262,549,313.18/306,090.20
  6. Step 6: Final answer
    x = 347,160.90

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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.