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Finding the Fourth Proportional to 323,397.45, 485,168.90 and 98,739.09

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Solution

The fourth proportional to 323,397.45, 485,168.90 and 98,739.09 is: 148,130.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,397.45 : 485,168.90 = 98,739.09 : x
  2. Step 2: Convert to fraction form
    323,397.45/485,168.90 = 98,739.09/x
  3. Step 3: Cross multiply
    323,397.45x = 485,168.90 × 98,739.09
  4. Step 4: Simplify right side
    323,397.45x = 47,905,135,188.61
  5. Step 5: Solve for x
    x = 47,905,135,188.61/323,397.45
  6. Step 6: Final answer
    x = 148,130.84

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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.