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Finding the Fourth Proportional to 324,104.10, 485,864.55 and 211,838.10

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Solution

The fourth proportional to 324,104.10, 485,864.55 and 211,838.10 is: 317,566.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,104.10 : 485,864.55 = 211,838.10 : x
  2. Step 2: Convert to fraction form
    324,104.10/485,864.55 = 211,838.10/x
  3. Step 3: Cross multiply
    324,104.10x = 485,864.55 × 211,838.10
  4. Step 4: Simplify right side
    324,104.10x = 102,924,623,129.36
  5. Step 5: Solve for x
    x = 102,924,623,129.36/324,104.10
  6. Step 6: Final answer
    x = 317,566.56

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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.