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Finding the Fourth Proportional to 306,321.60, 458,445.60 and 268,996.80

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Solution

The fourth proportional to 306,321.60, 458,445.60 and 268,996.80 is: 402,584.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,321.60 : 458,445.60 = 268,996.80 : x
  2. Step 2: Convert to fraction form
    306,321.60/458,445.60 = 268,996.80/x
  3. Step 3: Cross multiply
    306,321.60x = 458,445.60 × 268,996.80
  4. Step 4: Simplify right side
    306,321.60x = 123,320,399,374.08
  5. Step 5: Solve for x
    x = 123,320,399,374.08/306,321.60
  6. Step 6: Final answer
    x = 402,584.73

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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.