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Finding the Fourth Proportional to 323,838.34, 485,757.08 and 87,181.28

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Solution

The fourth proportional to 323,838.34, 485,757.08 and 87,181.28 is: 130,771.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,838.34 : 485,757.08 = 87,181.28 : x
  2. Step 2: Convert to fraction form
    323,838.34/485,757.08 = 87,181.28/x
  3. Step 3: Cross multiply
    323,838.34x = 485,757.08 × 87,181.28
  4. Step 4: Simplify right side
    323,838.34x = 42,348,924,003.46
  5. Step 5: Solve for x
    x = 42,348,924,003.46/323,838.34
  6. Step 6: Final answer
    x = 130,771.80

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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.