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Finding the Fourth Proportional to 323,813.30, 485,682.08 and 87,137.37

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Solution

The fourth proportional to 323,813.30, 485,682.08 and 87,137.37 is: 130,695.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,813.30 : 485,682.08 = 87,137.37 : x
  2. Step 2: Convert to fraction form
    323,813.30/485,682.08 = 87,137.37/x
  3. Step 3: Cross multiply
    323,813.30x = 485,682.08 × 87,137.37
  4. Step 4: Simplify right side
    323,813.30x = 42,321,058,671.64
  5. Step 5: Solve for x
    x = 42,321,058,671.64/323,813.30
  6. Step 6: Final answer
    x = 130,695.86

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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.