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Finding the Fourth Proportional to 323,542.11, 485,384.46 and 98,919.81

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Solution

The fourth proportional to 323,542.11, 485,384.46 and 98,919.81 is: 148,401.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,542.11 : 485,384.46 = 98,919.81 : x
  2. Step 2: Convert to fraction form
    323,542.11/485,384.46 = 98,919.81/x
  3. Step 3: Cross multiply
    323,542.11x = 485,384.46 × 98,919.81
  4. Step 4: Simplify right side
    323,542.11x = 48,014,138,560.15
  5. Step 5: Solve for x
    x = 48,014,138,560.15/323,542.11
  6. Step 6: Final answer
    x = 148,401.51

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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.