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Finding the Fourth Proportional to 323,517.89, 485,276.84 and 98,878.97

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Solution

The fourth proportional to 323,517.89, 485,276.84 and 98,878.97 is: 148,318.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,517.89 : 485,276.84 = 98,878.97 : x
  2. Step 2: Convert to fraction form
    323,517.89/485,276.84 = 98,878.97/x
  3. Step 3: Cross multiply
    323,517.89x = 485,276.84 × 98,878.97
  4. Step 4: Simplify right side
    323,517.89x = 47,983,671,183.28
  5. Step 5: Solve for x
    x = 47,983,671,183.28/323,517.89
  6. Step 6: Final answer
    x = 148,318.45

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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.