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Finding the Fourth Proportional to 323,771.40, 485,657.10 and 252,912.60

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Solution

The fourth proportional to 323,771.40, 485,657.10 and 252,912.60 is: 379,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,771.40 : 485,657.10 = 252,912.60 : x
  2. Step 2: Convert to fraction form
    323,771.40/485,657.10 = 252,912.60/x
  3. Step 3: Cross multiply
    323,771.40x = 485,657.10 × 252,912.60
  4. Step 4: Simplify right side
    323,771.40x = 122,828,799,869.46
  5. Step 5: Solve for x
    x = 122,828,799,869.46/323,771.40
  6. Step 6: Final answer
    x = 379,368.90

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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.