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Finding the Fourth Proportional to 323,609.88, 485,064.18 and 165,621.72

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Solution

The fourth proportional to 323,609.88, 485,064.18 and 165,621.72 is: 248,253.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,609.88 : 485,064.18 = 165,621.72 : x
  2. Step 2: Convert to fraction form
    323,609.88/485,064.18 = 165,621.72/x
  3. Step 3: Cross multiply
    323,609.88x = 485,064.18 × 165,621.72
  4. Step 4: Simplify right side
    323,609.88x = 80,337,163,801.99
  5. Step 5: Solve for x
    x = 80,337,163,801.99/323,609.88
  6. Step 6: Final answer
    x = 248,253.12

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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.