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Finding the Fourth Proportional to 323,891.49, 485,782.16 and 87,181.41

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Solution

The fourth proportional to 323,891.49, 485,782.16 and 87,181.41 is: 130,757.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,891.49 : 485,782.16 = 87,181.41 : x
  2. Step 2: Convert to fraction form
    323,891.49/485,782.16 = 87,181.41/x
  3. Step 3: Cross multiply
    323,891.49x = 485,782.16 × 87,181.41
  4. Step 4: Simplify right side
    323,891.49x = 42,351,173,225.74
  5. Step 5: Solve for x
    x = 42,351,173,225.74/323,891.49
  6. Step 6: Final answer
    x = 130,757.29

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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.