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Finding the Fourth Proportional to 323,520.89, 485,281.34 and 98,881.97

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Solution

The fourth proportional to 323,520.89, 485,281.34 and 98,881.97 is: 148,322.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,520.89 : 485,281.34 = 98,881.97 : x
  2. Step 2: Convert to fraction form
    323,520.89/485,281.34 = 98,881.97/x
  3. Step 3: Cross multiply
    323,520.89x = 485,281.34 × 98,881.97
  4. Step 4: Simplify right side
    323,520.89x = 47,985,571,982.62
  5. Step 5: Solve for x
    x = 47,985,571,982.62/323,520.89
  6. Step 6: Final answer
    x = 148,322.95

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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.