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Finding the Fourth Proportional to 323,604.40, 485,025.34 and 145,903.36

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Solution

The fourth proportional to 323,604.40, 485,025.34 and 145,903.36 is: 218,683.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,604.40 : 485,025.34 = 145,903.36 : x
  2. Step 2: Convert to fraction form
    323,604.40/485,025.34 = 145,903.36/x
  3. Step 3: Cross multiply
    323,604.40x = 485,025.34 × 145,903.36
  4. Step 4: Simplify right side
    323,604.40x = 70,766,826,791.14
  5. Step 5: Solve for x
    x = 70,766,826,791.14/323,604.40
  6. Step 6: Final answer
    x = 218,683.14

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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.