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Finding the Fourth Proportional to 323,999.60, 485,999.40 and 190,811.30

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Solution

The fourth proportional to 323,999.60, 485,999.40 and 190,811.30 is: 286,216.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,999.60 : 485,999.40 = 190,811.30 : x
  2. Step 2: Convert to fraction form
    323,999.60/485,999.40 = 190,811.30/x
  3. Step 3: Cross multiply
    323,999.60x = 485,999.40 × 190,811.30
  4. Step 4: Simplify right side
    323,999.60x = 92,734,177,313.22
  5. Step 5: Solve for x
    x = 92,734,177,313.22/323,999.60
  6. Step 6: Final answer
    x = 286,216.95

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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.