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Finding the Fourth Proportional to 323,398.20, 485,170.02 and 98,739.84

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Solution

The fourth proportional to 323,398.20, 485,170.02 and 98,739.84 is: 148,131.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,398.20 : 485,170.02 = 98,739.84 : x
  2. Step 2: Convert to fraction form
    323,398.20/485,170.02 = 98,739.84/x
  3. Step 3: Cross multiply
    323,398.20x = 485,170.02 × 98,739.84
  4. Step 4: Simplify right side
    323,398.20x = 47,905,610,147.60
  5. Step 5: Solve for x
    x = 47,905,610,147.60/323,398.20
  6. Step 6: Final answer
    x = 148,131.96

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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.