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Finding the Fourth Proportional to 323,943.70, 486,158.55 and 166,090.90

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Solution

The fourth proportional to 323,943.70, 486,158.55 and 166,090.90 is: 249,260.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,943.70 : 486,158.55 = 166,090.90 : x
  2. Step 2: Convert to fraction form
    323,943.70/486,158.55 = 166,090.90/x
  3. Step 3: Cross multiply
    323,943.70x = 486,158.55 × 166,090.90
  4. Step 4: Simplify right side
    323,943.70x = 80,746,511,112.20
  5. Step 5: Solve for x
    x = 80,746,511,112.20/323,943.70
  6. Step 6: Final answer
    x = 249,260.94

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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.