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Finding the Fourth Proportional to 352,556.88, 527,665.86 and 321,039.78

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Solution

The fourth proportional to 352,556.88, 527,665.86 and 321,039.78 is: 480,494.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,556.88 : 527,665.86 = 321,039.78 : x
  2. Step 2: Convert to fraction form
    352,556.88/527,665.86 = 321,039.78/x
  3. Step 3: Cross multiply
    352,556.88x = 527,665.86 × 321,039.78
  4. Step 4: Simplify right side
    352,556.88x = 169,401,731,607.91
  5. Step 5: Solve for x
    x = 169,401,731,607.91/352,556.88
  6. Step 6: Final answer
    x = 480,494.75

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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.